Explanation of Terms Used in Entomology

Iceous or Icius: suffix; expresses a likeness or the possession of a character see aceus.

Icotypes: typical specimens which serve for purposes of identification, but have not been used in literature.

Idiotype: a specimen named by the author after comparison with the type, but not also a topotype.

Ignitus: fire-red [vermilion].

Ileo-colon: the anterior portion of the hind-gut, extending from the mid-gut to the rectum, when not distinctly differentiated into ileum and colon.

Ileum: the small intestine; begins at end of chylific ventricle at the point where malpighian tubules join, and extends to colon.

Imaginal: pertaining to the adult or imago.

Imaginal buds, cells, or discs: in forms with a complete metamorphosis are those embryonic cells around and from which the organs and appendages of the future imago develop.

Imago: the adult or sexually developed insect.

Imbricate: arranged or appearing like the scales on a fish or the shingles on a roof.

Immaculate: destitute of spots or marks.

Immarginate: without an elevated rim or margin.

Immersed -us: inserted, imbedded or hidden in.

Imponderable: that which cannot be weighed.

Impregnate-ed: to make or made fertile or pregnant: fertilized.

Impressed -us: a surface with shallow depressed areas or markings.

Impubis: without hair.

Inaequalis: unequal.

Inarticulate: not jointed or segmented.

Inaurate -us: golden yellow [pale cadmium yellow].

Ineanus: hoary.

Inch: the English and American standard of length in insect measurement: it is = 12 lines and = 25.4 mm.: usually expressed in units and hundredths, as 1.01.

Incised: notched or deeply cut into.

Incision: any cut into a margin or through a surface: the marginal slits or notches in Coccidae.

Incisure: an impressed line marking the junction of two segments: an incision.

Inclinate -us: leaning or inclining.

Inclusus: when one part is wholly or partially hidden in another.

Inconspicuous: not attracting attention or quickly noticeable.

Incrassated: thickened: rather suddenly swollen at some one point, especially near tip.

Incubate: to brood: to cause to develop; as an egg.

Incumbent: lying one over another: wings when they cover the dorsal horizontally.

Incunabulum: = folliculus and cocoon; q.v.

Incurved -ate: bowed or curved inwards.

Independent: in Lepidoptera; that vein of the wings that arises from the cross-vein closing the cell, and does not branch directly from any vein reaching the base: it is v. 5 of the numerical series in both wings and the media of Comstock.

Indeterminate: not defined nor well marked; obscure: of no constant form or shape.

Indigote: a very deep indigo blue.

Indirect: applied to metamorphosis = complete.

Indumentum: a covering of hairs, scales or tufts.

Indurated: hardened.

Indusium: the case made by an insect larva: a membranous layer of the embryo of Locustidae below the serosa.

Inequal: a surface with irregular elevations and depressions.

Inermis: unarmed: without spines or spurs.

Infericornia: Hemiptera; in which the antenna appear to be inserted well down on the sides of head; e.g. Lygaeidae.

Inferior: beneath, below or behind: a term of position.

Inferior appendage -es: in male Odonata the lower one or two of the terminal abdominal parts used to clasp the female in copulation.

Inferior wings: = hind wings or secondaries: q.v.

Infero-posterior: below and behind: refers to location.

Inflated: blown up; distended bladder-like.

Inflected: bent inward at an angle.

Inflexus: = inflected.

Infra: below or beneath: opposed to supra.

Infra-anal lobe: a thick, conical fleshy lobe, often ending in a chitinous point, situated beneath the vent in caterpillars.

Infra-cereal plates: in Orthoptera - generally inconspicuous paired plates which underlie in part the cerci and in part the lateral portion of the supra-anal plate.

Infra-clypeus: = ante-clypeus and rhinarium: q.v..

Infracted: abruptly bent inward, as if broken.

Infra-genital: below the genital opening or process.

Infra-marginal: situated below or behind the marginal cell.

Infra-median vein; in Orthoptera: = ulnar vein: q.v.

Infra-ocular: applied to the region below and between the eyes.

Infra-oesophageal: situated below oesophagus; see sub-oesophageal.

Infra-stigmatal: situated below the stigmata or spiracles.

Infringing: encroaching upon.

Infumated: clouded.

Infundibuliform: funnel-shaped.

Infuseated: smoky gray-brown, with a blackish tinge [Roman sepia].

Ingens: unusually large or disproportionate in size.

Ingluvies: the crop; q.v.

Inner lobe: of maxilla = lacinia: q.v.

Inner margin: the line extending along the lower or interior edge of the wing from the base to the hind or anal angle.

Innervate: to supply with nerves.

Innotatus: without markings.

Inocular: inserted in the inner margin of and partially or wholly surrounded by the eye.

Inquiline: a species living in a gall or other structure prepared by a different species, not as a parasite but as, a guest.

Inquiline: living as guests in the homes of others; as in galls.

Insect: a member of the class Insecta strictly limited.

Insecta: broadly defined, contains all articulates that are also tracheates and have the head free from the thorax; more strictly limited to those forms that have only three pairs of thoracic legs in the adult stage and a limited number of segments.

Insectary: a place or building where insects are bred and studied.

Insectivorous: feeding upon or devouring insects.

Insectologist: a student of insects: = entomologist.

Insectology: the science of insect study: = entomology.

Insertion: the point or place where a part is inserted: a part that is inserted: the act of inserting.

Insertus: a part that has its base set into another.

In situ: in its natural place or normal position.

Instar: the period or stage between molts in the larva, numbered to designate the various periods; e.g. the first instar is the stage between the egg and first molt, etc.: see stadium.

Institia: stria or furrows of equal width throughout.

Instrumenta cibaria: mouth parts of a mandibulate insect as a whole.

Instrumenta suctoria: mouth parts of a haustellate insect as a whole.

Integer: entire: applied to a margin without incisions.

Integument: the outer covering to the insect body.

Inter: between; among.

Inter-alar space: in Odonata; the terga of meson- and meta-thorax.

Interantennal: between the basal segments of antennae.

Inter-articular: the membranous tissue between joints or segments.

Intercalary -ies: additional or inserted between others; as a vein: plural; added or supplementary longitudinal wing reins: see under specific headings; i.e. anterior, etc.: in Ephemerides, certain longitudinal veins between the 8th (anal) and 9th (1st maxillary) and not branches of either: in Diptera, the anterior intercalary (Loew) = the discoidal, and the posterior intercalary = the cubitus 1 of Comstock: applied to an evanescent sclerite in the embryo between antenna and mandible; also termed premandibular.

Intercostal: between veins or costae; usually in the narrow grooves between veins in the costal region of a wing.

Intercostula: those small, vein-like structures between the normal veins, visible on a wing margin but lost toward the disc.

Intercoxal process: in Coleopteran; a median protrusion of the basal segment of abdomen between the hind coxae.

Intermediate: lying between others in position or possessing characters between two other forms.

Intermediate field: of termini is = discoidal field q.v.

Internal area: in Hymenoptera; the posterior of the three areas between median and lateral longitudinal carina on the metanotum third lateral area.

Internal cell: in Hymenoptera (Pack.) 2d anal (Comst.).

Internal triangle: in Odonata see triangle.

Internal veins: in Lepidoptera, from one to three in number, run free from base to outer margin near hind angle; never branched;1a to is in the numerical series: = anal veins (Comst.).

Interneural: between the nerves (or veins) of wings.

Interno-mandibular: applied to one of the pairs of salivary glands in bees, situated at the inner side of base of mandible.

Internomedian: in Orthoptera; = cubitus (Comst.); q.v.

Interocular: between the eyes.

Interplical: lying between folds; specifically applied to the alternate ridges and grooves in anal area of secondaries of Orthoptera.

Interposed sectors: in Odonata; the shorter longitudinal veins occurring in the wings of some species between the chief veins; = supplementary sectors. Interrupted: broken in continuity, but with the tips of the broken parts in a right line with each other.

Intersegmental: = interarticular; q.v.

Interspace: Coleopteran; the plane surface between elytral striae: Lepidoptera spaces between wing veins not included in closed cells.

Interspaceal: occurring in the interspaces between two wing veins or two elytral striae.

Interstice -tium: space between two lines, whether striate or punctate.

Interstitial line: the elevated ridge between two striae or series of punctures.

Interval: the space or time between two structures, sculptures or periods of development.

Interventricular: the inner valve between the chambers of the heart.

Interventricular valvule: of heart, lies in front of seluilunar valve.

Intervenular: in thespace between two veins.

Intestinal caecum: that point of the large intestine in front of the junction with the small intestine.

Intestine: that part of the alimentary canal through which the food passes from the stomach, in which absorption is completed and the excretions are formed for expulsion.

Intima: the lining membrane of the trachea: see endotrachea.

Intorted: turned or twisted inwardly.

Intra-: within: between.

Intra-alar bristles: in Diptera; a row of two or three between the supra-alar and dorso-central groups.

Intracellular: occurring within the cell or in a cell.

Infra-humeral bristles: in Diptera calyptrata; occur immediately in front of the thoracic suture, between the humeral callus and the presutural depression.

Infra-ocular: situated within the eye, actually or apparently.

Intra-pulmonary: that method of respiration which does not involve movements of the outer body wall and is confined to the respiratory organs.

Intrauterine: applied to development, when the young hatch within the vagina of the mother.

Intricate: irregular: confused; applied to markings and sculpture.

Intromittent: used for throwing within.

Intromittent organ: the penis; q.v.

Introse -um: directed inward, toward the body.

Intrusus: seemingly impressed with a sharp point.

Intumescent: enlarged; swollen: expanded.

Invaginate: when a tubular or vesicular part is turned inward or retracted within the body wall.

Invagination: a pouch or sac formed by an infolding or indrawing of the outer surface.

Investitus: unclothed: a surface without scales or hair.

Involucrate: = involute.

Involucrum alarum in Dermaptera a flap of the metanotum.

Involute: spirally rolled inwardly.

Involuti: butterflies whose larvae live in a folded leaf; Hesperidae.

Iridescent: a surface which reflects the prismatic hues.

Iridicolor: any color so broken up as to reflect the prismatic hues.

Iris: the circle which, in an ocellate spot surrounds the pupil.

Irised: with rainbow colors.

Iris-pigment: = iris tapetum.

Iris tapetum: the pigment layer of the compound eye just below the crystalline cone.

Irregular: unequal, curved, bent or otherwise twisted or modified without order or symmetry, e.g. certain antennae.

Irrorate: marked with minute points; freckled.

Isabelline -us: pale yellow with some red and brown [chronic lemon with a little carmine and roman sepia].

Ischia: = pleura; q.v.

Iso-: equal.

Isolate: to separate out from others; occurring alone.

Isomers: that series of Coleoptera in which the tarsi have an equal number of joints on all feet.

Isomerous: with equal number of tarsal joints on all feet := homoeomerous.

Isomorphous: having the same form, appearance or construction.

Isopalpi: that series of Trichoptera in which the palpi of both sexes have the same number of joints.

Isoptera: equal winged: an ordinal term for insects with four, similar, net-veined wings; mouth mandibulate; thoracic rings similar, loosely jointed metamorphosis incomplete: the Termitidae. {Scanner's note: In modern nomenclature the Isoptera constitute the order of all termites; the Termitidae are just one family within the Isoptera.}

Isotypical: a genus described from more than one species, all of which are congeneric.

-itus: = -atus; q.v.

-ius: suffix; having the power or ability to.

J

Jabot: the crop; q.v.

Janthine: violet colored.

Jaw-capsule: contains the mouth structures in those dipterous larvae in which the head is differentiated.

Johnston's organ: a complex nervous structure in the basal joint of dipterous antennae.

Joint: a segment or part between two incisures: an articulation.

Jubate -us: fringed with long pendent hairs.

Juga: the lateral anterior lobes of the head of a Heteropteron; each side of the tylo.

Jugatae: that series of Lepidoptera in which there is a jugum instead of a frenulum to unite the wings in flight.

Jugular: of or pertaining to the throat.

Jugular sclerite: small sclerite in the membrane connecting the head with the thorax: see cervical sclerite.

Jugulum: that sclerite just behind the sub-mentum; =gula: that cavity of the posterior part of the head to which the neck is annexed: the lateral and under parts of the prothorax.

Jugum: in certain Lepidoptera and Trichoptera, a lobe or process at the base of primaries, overlapping secondaries and holding the two together in flight.

K

Katabolic: the destructive change from animal tissue to waste product: see anabolic.

Keel: an elevated ridge or carina.

Kermesinus: dark red, with much blue [purple lake].

Key: a tabular or other arrangement of species, genera or other classification according to characters that serve to identify them.

Kidney-shaped: like a kidney in outline; convex on one long side, concave on the other, the ends evenly and somewhat obtusely rounded: bean-shaped.

Knee: the point of junction of femur and tibia.

Labellum -a: the sensitive ridged tip of the mouth structures of certain Diptera: a prolongation of the labium covering the base of rostrum in Coleoptera and Hemiptera.

Labial: referring, pertaining or belonging to the labium.

Labial segment: the 7th segment of head = second maxillary segment.

Labial suture: is between labium and mentum.

Labiate: lip-like or having lip-like sutures.

Labipalp: a labial palpus.

Labis: the slender abdominal forceps in some Lepidoptera.

Labium: the lower lip: a compound structure which forms the floor of the mouth in mandibulate insects, behind the first maxilla and opposed to the labium; formed by a fusion in embryonic life of separate right and left maxilla-like halves: in some of its developments referred to as the tongue.

Labral suture: is between labrum and clypeus.

Labro-frontal lobes: of brain, = trito-cerebrum; q.v.

Labrum: the upper lip; covers the base of the mandible and forms the roof of the mouth.

Labrum-epipharynx: in the mouth of piercing Diptera is the central unpaired lancet.

Lac: a mixture of resin, wax and other substances produced by certain scale insects as a protective covering.

Lacer: a lappet; applied to a margin with irregular, broad and deep emarginations, leaving lappet-like intervals.

Lacerated: ragged; torn in appearance; see lacer.

Lacinia: the inner lobe of first maxilla, articulated to the stipes, bearing brushes of hair or spines: a blade: in Diptera, forms a flat lancet-like piercing structure and is never jointed.

Lacinia exteriores and interiores: in Apidae, the palpiger and paraglossa often used for the gales and lacinia of maxilla.

Laciniated: jagged; cut into irregular fragments.

Lacte: milk-white.

Lacteal: relating to milk; milky in appearance.

Lactescent: secreting or yielding a milky fluid.

Lacteous -eus: white, with a slight bluish tinge, like skim-milk.

Lacunae: irregular impressions or cavities: specifically the non-walled cavities of the body.

Lacunose: pitted; the surface covered with small cavities.

Laemodipodiform: like a laemodipod; similar to the larva of a walking stick.

Laete: bright.

Laevis -igatus: smooth, shining and without elevations: said of a surface.

Lamella: a thin plate or leaf-like process.

Lamellate: antennae with the club formed of closely opposed leaf-like surfaces, the concealed surfaces set with sensory pits.

Lamellicornia: those beetles in which the antennae terminate in a lamellate or leaf-like club.

Lamelliform: made up of or resembling leaves, blades or lamellae.

Lamina -ae: a chitinous plate or plates.

Lamina externa: the paraglossa.

Lamina interna: the ligula.

Lamina subgenitalis: the sub-genital plate; q.v.: in roaches the 7th ventral plate of females and 9th ventral plate of males.

Lamina supra-analis: = supra-anal plate.

Laminate: formed of thin, flat layers or leaves.

Laminato-carinate: with an elevated ridge or keel, formed of thin plates.

Laminiform: layer-like: having the appearance or made up of lamina.

Lana: wool: the long hair on the abdomen of some Lepidoptera.

Lanate -atus: woolly: covered with dense, fine, long hairs, so distinct that they may be separated.

Lanceolate: lance- or spear-shaped: oblong and tapering to the end.

Lanceolate cell: in Hymenoptera (ort.); - 2d anal (Comst.).

Lancet: indiscriminately applied to any piercing mouth structure.

Lanuginose -us: with long, curled hair dispersed over the surface: see crinitus.

Lanugo: slender single hairs.

Laparostict: that series of lamellicorn beetles in which the abdominal spiracles are situated on the connecting membrane between the dorsal and ventral rings.

Lapidicolous: living under deeply imbedded stones.

Larva: the second stage of insect development; comes from the egg or ovum, grows, and according to its kind, changes to a pupa or chrysalis or to an imago; bears various names in the different orders: see nymph; caterpillar slug; maggot; grub.

Larvarium: a tube or case made by a larva as a shelter or retreat.

Larvatae: asked; applied to coarctate and obtect pupae.

Larvina: a maggot: a dipterous larva without distinct head or legs.

Larvule: applied to early stages of Ephemerid larvae when they appear to have no developed respiratory, circulatory or nervous systems.

Lashed: eyes that have a more or less complete fringe of stiff hairs or bristles at the orbits.

Lasureus: a very dark blue [French blue with some black].

Laterad: toward the side and away from the median line.

Lateral: relating, pertaining or attached to the side.

Lateral areas: in Hymenoptera; on the metanotum, the three spaces between the median and lateral long carinae; the upper is the external or first lateral basal area; the second is the external or central lateral area; the third is the middle, internal, apical or third lateral area.

Lateral bristles: in Diptera; situated at or near the lateral margins of the abdominal segments.

Lateral carinae: in Orthoptera; on the head, extend downward from the front margin of the eyes: on prothorax extend along each lateral margin of the dorsum.

Lateral foveolae: in Orthoptera: foveate depressions on the margins of the vertex near the front border of the eye.

Lateral line: in caterpillars is at the margin of the dorsum between sub-dorsal and supra-stigmatal line.

Lateral lobe: of the labium in Odonata, corresponds to the paraglossa with palpiger and palpus (Gerstaecker) or, more probably, to the palpus alone (Butler).

Lateral lobes: the deflexed portions of pronotum that cover the sides of pro-thorax in many Orthoptera: in certain Hymenoptera, lie on each side of the parapsidal furrows of mesoscutum and = scapulae.

Lateral longitudinal area: of Hymenoptera, extends between the median and pleural carinae of metanotum.

Lateral ridge: in slug caterpillars, extends longitudinally along the lateral series of abdominal tubercles.

Lateral scale: one of the lateral processes of the ovipositor in Cynipidae, lying within and below the anal scale.

Lateral space: in slug caterpillars is the area on each side of the body between the subdorsal and lateral ridges.

Lateral sutures: of the thorax in Odonata, are situated on the sides of thorax, the first separating the metepisternum from the mesepimeron; the second separating the metepisternum from the metepimeron; the first more or less obsolete in the Anisoptera.

Lateral tubercle: lateral on thoracic and abdominal segments of caterpillars: it is 3 of the abdomen, 2a of thorax: constant (Dyar).

Latericeous: = lateritius: q.v.

Lateritius: yellowish-red; yellowish brick color [pale clay yellow with a little red].

Laterodorsal: the point of junction of dorsum and pleurum.

Lateropharyngeal: applied to the 4th pair of salivary glands in bees; situated on each side of the pharynx.

Laterostigmatal: situated on the side, immediately above the spiracle.

Lateroventral: the point of junction of sternum and pleurum.

Latero-ventral metathoracic carina: in Odonata; forms the dividing line between the metepimera and the metasternum.

Latescent: becoming obscure or hidden.

Latreille's segment: the first abdominal segment of those Hymenoptera in which it is fused with the thorax:= median segment, propodeon, propodeum.

Latticed: = cancellate; q.v.

Latus: the side: broad.

Latuscula: the facets of the compound eye.

Leathery: having the appearance or texture of leather.

Lectotype: a co-type chosen, subsequently to the original description, to take the place which in other cases a holotype occupies.

Leg -s: the jointed appendages attached to the thoracic segments, used in walking: the organs of locomotion other than wings: unjointed organs of locomotion are pro-legs or false legs; q.v.

Legion: a group of genera, subequal to a tribe.

Legnum: the margin of a squama.

Lemniscate: ribbon-like: in the form of an 8.

Lenticular: round, doubly convex; like a lens or lentil.

Lepidoptera: scale-winged: an order of insects with spirally coiled haustellate mouth structures; head free; thorax agglutinate; transformations complete four scale-covered wings.

Lepidopteric acid: a green pigment obtained from the wing scales of Lepidoptera; a derivative of uric acid: see Lepidotic acid.

Lepidopteron: a butterfly or moth: one of the Lepidoptera.

Lepidotic: set with minute scales.

Lepidotic acid: a yellow pigment obtained from certain butterfly scales a derivative of uric acid: see Lepidopteric acid.

Lepis: a scale.

Leprous: with loose, irregular scales.

Leptiform: = compodeiform; q.v.

Leptos: small, fine.

Lethargic: torpid or inactive.

Leucine: a white crystalline compound, the product of animal decomposition, found in the malpighian tubes: as a color, cheesy white.

Leucocytes: pale, unicellular bodies, numerous in the insect blood.

Levator: a muscle that raises an organ or a part.

Levigate -us: with a smooth, somewhat shiny surface.

Liber: free.

Ligament: a band or sheet of tough, fibrous tissue between two parts or segments.

Ligneous -eus: wood brown [Vandyke brown].

Lignivorous: feeding upon wood or woody tissues.

Ligula: the central sclerite of the labium, borne upon the mentum, usually single, sometimes paired: often used as synonymous with "glossa" and "tongue": corresponds to the united laciniae of right and left maxillae: see also elytral ligula.

Ligulate: strap-shaped; linear, much longer than broad.

Lilacinous: lilac-colored [lilac].

Limaciform: having the form of a Limax or slug; said of larvae.

Limb: the circumference: the area surrounding the disc.

Limbate: when a disc is surrounded by a margin of different color.

Limbus: the area along the outer and posterior margin of wing beyond the closed cells; Homoptera, Cicada.

Limpid: clear and transparent: applied to wings and ornamentation.

Line: a narrow streak or stripe: as a term of measurement, one- twelfth of an inch; commonly used by English and early American authors.

Linea: a line or narrow stripe.

Linear: straight; in the form of a right line.

Lineate: marked with lines or streaks: lined.

Lineolet: a delicate fine line.

Lingua: the tongue; applied in Hymenoptera, to the ligula: in Lepidoptera and Diptera, to maxillary structures: has also been used for the hypopharynx, and that use might be adopted: a median organ of the hypopharynx in Apterygota.

Lingua spiralis: the spiral tongue of Lepidoptera: see glossa.

Linguiform: tongue-shaped: linear, with the extremities obtusely rounded.

Lingula: in Aleurodidae, a more or less slender tongue or strap-shaped organ, attached cephalad within the vasiform orifice: a term proposed by Leuckart for the ligula of the bees.

Lipochromus: without color.

Lipoptera: = Mallophaga; q.v.

Literate: ornamented with characters like letters.

Littoral: living along the sea-coast or in the shore debris: strictly, between tide marks.

Littoralia: Heteroptera that live in marshes.

Litura: an indistinct spot, paler at its margin.

Livid: yellowish gray with a violet tinge: greenish gray.

Lobate -us: divided by deep, undulating and successive incisions.

Lobe: any prominent rounded process or excrescence on a margin: specifically, the rounded, tooth-like processes on the margin of the pygidium of the Diaspinae: also applied to lateral expansions of the abdominal segments.

Lobes: of the maxilla; see galea (outer) and lacinia (inner): of the mentum in Coleoptera, are the lateral expansions shielding the base of the central organs.

Lobes of pronotum: in Orthoptera; the spaces or areas formed by three transverse impressions on the pronotum: that which borders the head is the anterior lobe, the hindmost is the posterior lobe, those intervening are the middle lobes.

Lobiform: shaped like a lobe or rounded process.

Lobulate: divided into, or with many small lobes or lobules.

Lobule: in Coccidae, one of the two distinct parts of which a lobe is sometimes composed.

Lobulus: the partly separated portion of the wings of some flies and of secondaries in some Hymenoptera: also used as = alula; q.v.

Lobus: of maxilla = galea; q.v.

Locomotion: organs of, are legs and wings.

Longicorn -ia: having the antennae as long or longer than the body; specifically the Cerambycid beetles.

Longitudinal: in the direction of the long axis.

Longitudinal veins: are those that extend lengthwise through the wing either directly from base or as branches of one that does start there: they are named or numbered, and differently in the different orders.

Loop: applied to that structure at base of innerside of primaries into which the frenulum of male moths is fitted: see retinaculum.

Looper: applied to geometrid and other caterpillars in which some or all the middle abdominal legs are wanting and which move by bringing tail to thorax and forming a loop of the intervening segments.

Lora: the chitinous bands connecting the submentum with the cardo of maxilla (Comst.): the submentum: small cords upon which the base of the proboscis is seated (Say): the anterior part of the genae at the edge of the mouth: the corneous processes to which the muscles flexing the mouth in certain Diptera are attached, and in that sense the palpifer of the maxilla: in Homoptera, the small sclerite at side of clypeus and front, extending laterally to the genae.

Lorum: in bees: the angular piece upon which the sub-mentum rests.

Lower austral zone: occupies southern part of United States from Chesapeake Bay to the great interior valley of California. Is interrupted by the continental divide in eastern Arizona and west New Mexico and divided according to conditions of humidity into an eastern or Austroriparian and western or lower Sonoran area.

Lower field: in termini; see costal field.

Lower fronto-orbital bristles: in Diptera: are on the lower part of front, above the antennae, along the orbit.

Lower margin: of tegmina (Thomas), is the costal or anterior margin of other authors.

Lower radial vein: in Lepidoptera (Holland) media 2 (Comst.).

Lower sector of triangle: in Odonata - = cubitus 2 (Comst.).

Lower Sonoran faunal area: comprises the most arid deserts of North America, beginning west of lat. 98 degrees in Texas: sends narrow arms into southern New Mexico, is interrupted by the Continental Divide; covers a large part of w. and s. Ariz., s. w. Nev., s. w. Calif., a portion of central Calif., and most of Lower Calif. These areas are irregular and incapable of brief definition.

Lubricate -ous: covered with a slippery mucus.

Lucid: shining; applied to luminous insects.

Luciferase: a substance in the nature of an enzyme, existing in the luminous organs of light-giving beetles.

Luciferine: a substance in the blood of luminous beetles which, when brought into contact with luciferase, produces light.

Luciferous: light giving.

Lucifugous: fleeing the light: applied to nocturnal forms or those that live in concealment.

Lumen: the cavity of an organ: the inner surface of a tube: the hollow portion of a gland or vesicular structure.

Luminescence: applied to the light of fire-flies, as a substitute for phosphorescence.

Lumper: one who, in describing species or genera recognizes only prominent or obvious characters to the exclusion of minor color or variable characters of maculation or structure: see splitter.

Lunaris or Lunate: crescent-shaped: formed like a new moon.

Lunula: a small lunule or crescent.

Lunulae: in Hymenoptera, crescent-shaped marks near the orbits.

Lunulate: a line, when made up of a series of small lunules.

Lunule: a lunate mark or crescent.

Lurid -us: dirty brown with a bluish tinge [pale brown + a little French blue]: also used to indicate an obscuring of bright colors.

Luteo -testaceous: dark clay yellow.

Luteous -eus: clay yellow [pale clay yellow].

Lutescent: becoming or appearing to be clay yellow.

Lutose -us: apparently or really covered with dirt.

Lymphatic: producing, carrying or relating to the lymph.

Lyrate: lyre-shaped: cut into several transverse segments, and gradually enlarging towards the extremity.

Lyre: the upper wall or border of the spinning tube of caterpillars.

M

Macrochaetae: the long bristles occurring singly on the body of Diptera.

Macropterous: long or large winged.

Macrosomites: the primitive regions of primitive hand of the insect embryo.

Macula: a colored mark larger than a spot; of indeterminate figure.

Maculate -ed: spotted or marked with figures of any shape, of a color different from the ground.

Maculation: the ornamentation or pattern of marking.

Maculose: spotted; with many marks or spots.

Maerianum: "that segment of the post-pectus situate one on each side behind the acetabulum and parapleurum; it supports the posterior feet": see meriaeum.

Magenta: pinkish red; an aniline product.

Magis: more.

Maggot: applied to the footless larvae of Diptera.

Mala: a lobe: a ridged or grinding surface.

Mala mandibularis: the grinding surface or area of a mandible.

Mala maxillae: the globes of maxilla; outer or galea, inner or lacinia; where only one is present, the term refers to that one.

Malaxation: a kneading or softening; applied to the chewing and squeezing by fossorial wasps of insects captured as food for their larva.

Male: that sex having organs for the production of spermatozoa: designated by "?", the astronomical sign for Mars. {Scanner's comment: The sign for Mars being an diagonal arrow rising from a circle, and pointing upwards towards the right.}

Mallophaga: wool-eaters: an ordinal term applied to biting lice: wingless: mandibulate; thoracic segments similar; no metamorphosis: =Lipoptera.

Malpighian tubules: long, slender tubules, varying in number, serving as excretory organs, entering the alimentary canal at the point of junction of chylific ventricle and ileum: said to be analogous with kidneys: = biliary vessels.

Mammilate: with nipple-like protuberances or processes.

Mandible: the lateral upper jaws of a biting insect.

Mandibular strobe: a broad deep groove on outer side of mandible in some Coleoptera.

Mandibular segment: the fourth or mandible bearing segment of head.

Mandibulata: that series of insects in which the adults have functional mandibles used for biting.

Mandibulate: with jaws or mandibles.

Manicate -us: fur-like: surface clothed with irregular depressed hair.

Manitrunk: that part of trunk that bears the anterior legs: =prothorax.

Manometabola: with a slight or gradual metamorphosis and without a resting stage; e.g. the Orthoptera.

Manubrium: in Coleoptera: that part of the mesosternum in Elateridae which forms the process for fitting into the cavity of the prothorax: in Collembola the basal part of the furculum.

Manus: the hand: formerly applied to the anterior tarsus.

Marbled: irregularly mottled, gray and white, like marble; = marmoratus.

Marcescent: shrivelling.

Margaritaceous: shining, like mother of pearl = nacreous; q.v.

Margin: that portion of a surface within the edge, bounded on the inner side by the sub-margin and consisting of a more or less dilated imaginary line.

Marginal: of, belonging to, or near the margin.

Marginal area: in Orthoptera; see mediastinal area.

Marginal bristles: in Diptera; are inserted on the posterior margin of the abdominal segment.

Marginal cell: in Diptera (Williston):= subcostal (Shiner):= radial (Comst.): in Hymenoptera:= radial and 2 (Comst.): in general that cell beyond the stigma.

Marginal field: in tegmina = costal field: q.v.

Marginal nervure or vein: in Orthoptera, = costa (Comst.): in Hymenoptera (Norton) = radius 3 (Comst.): in general, the vein forming the marginal cell.

Margined -ated: bounded by an elevated or attenuated margin: when the margin is edged by a flat border.

Marmorate -us: spots and lines irregularly disposed, as in marble: marbled. Mask: in the nymphs of Odonata, the modified labium which, when at rest, conceals the other mouth parts.

Masticate: to chew.

Masticatory: formed for chewing or grinding; applied to the mouth parts and to the grinding structures in the gizzard.

Mastigium -ia: telescopic anal organs in certain caterpillars, serving to repel attacks of parasites.

Matrix: the formative substance from which cells and other structures are derived.

Maxilla: without any qualifying adjective, the second pair of jaws in a mandibulate insect; the most persistent when the mouth is modified, and represented by some functional part in all insects in which the mouth structures are useful: second maxillae, = the labium, or third pair of jaws in a mandibulate insect.

Maxillary: attached or belonging to the maxilla; e.g. palpi.

Maxillary palpi: the first pair of palpi, borne on the maxilla.

Maxillary pleurites: the lateral pieces, epimera and episterna of the maxillary segment.

Maxillary segment: the sixth segment of the head, bearing the maxillae.

Maxillary tendons: two slender rods in basal third of the muscid proboscis the remnant of the palpifer, to which muscles for flexing the proboscis are attached: see lora.

Maxillary tentacle: in female Pronuba: a specialized process of palpifer.

Maxillulae: a pair of appendages in Thysanurids, between mandibles and first maxillae.

Maxime: very much or very large.

Mealy: with a flour-like dusting: = farinose.

Mecaptera: = Mecoptera, q.v.

Meconium: the substance excreted by certain metabolic insects soon after their emergence from the chrysalis or pupa.

Mecoptera: long-winged: neuropterous insects with similar, large, unfolded wings; mouth mandibulate, prolonged into a beak: head free; thorax agglutinated; transformations complete: the scorpion flies or Panorpidae. Medi-: prefix, = middle.

Media: the fourth of the longitudinal veins extending from base through approximately the middle of the wing, not more than four branched, the branches numbered on margin from nearest apex, to 4 nearest anal angle: in Orthoptera; it is the median or externomedian: in Lepidoptera (Pack.), is cubitus (Comst.).

Mediad: toward the median plane or middle.

Mediafurca: a process extending internally from the meso-sternum, to which the muscles are attached.

Medial: referring to, or at the middle.

Medial cells: (Comst.), are anteriorly bounded by the media or its branches: in Hymenoptera (Mort.), includes median and cubital (Comst.)

Medial cross-vein: (Comst.), is between media 2 and 3.

Median 1: in Lepidoptera (Pack.), = media 2 (Comst.).

Median 2: in Lepidoptera (Pack.), = media 3 (Comst.).

Median 4: in Lepidoptera ( Pack.), = cubitus 2 (Comst.).

Median area: of wings in Orthoptera, lies between the radial and ulnar veins, radius and media (Comst.): of meta-thorax of Hymenoptera, is the middle of the dorsum, divided into three spaces or cells; 1st or basal area, 2d or Lipper median or areola; 3d or apical or petiolar area.

Median carina: Orthoptera; of head, is usually applied to a median dorsal carina, but has been also used for that which extends down the middle of front from the fastigium, and then = frontal costa: of prothorax, extends along the middle of pronotum.

Median cell: in Lepidoptera, is the closed area formed by a line extending from the end of subcostal to the end of the median veins, = radial (Comst.): in Hymenoptera, 1st median (Pack.), = medial (Comst.); 2d median (Pack.), - medial 4 (Comst.); 3d median (Pack.), = medial 2 (Comst.); 4th median (Pack.), = medial 1 (Comst.).

Median cross-veins: in Odonata; are those which cross median space.

Median foveola: in Orthoptera; the foveate depression of the vertex between the eyes: = central foveola.

Median forks: in Orthoptera, refers to the forks of the median vein.

Median furrow: lies between radius and media: in some Heteroptera, separates the embolium from the remainder of the corium.

Median lines: on the primaries of many moths: the first or t.a. crosses about one-third from base; the second or t.p. crosses beyond the outer third and is usually sinuate.

Median lobe: of labium in Odonata, is the partly divided glossa or ligula; probably corresponds to united glossa and paraglossae (Butler).

Median longitudinal carinae: on the metanotum of Hymenoptera, extend one on each side of the middle.

Median nervules: in Lepidoptera (Holland)1st = cubitus 2 (Comst.): 2d cubitus 1 (Comst.); 3d = media 3 (Comst.).

Median notch: in Coccidae, a notch in the edge of the pygidium, at the posterior extremity of the body.

Median plate: in Hymenoptera := sessiliventres, is the dorsal plate connecting the thorax and abdomen.

Median sector: in Odonata, = media 3 (Comst.).

Median segment: applied to the basal segment of the abdomen when it forms part of the metathorax: see propodeum.

Median shade or line: in Lepidoptera, crosses at or about middle of wings.

Median space: in Lepidoptera, is the area between the median lines: in Odonata, the cubital cell (Comst.); the space at base between submedian (radius) and postcosta (st anal); by Selys in 1896 and later used in the sense of medial cell of Comst.

Median vein: in Odonata and Lepidoptera, = radius (Comst.): in Lepidoptera, it runs from base to about middle, nearly through centre, and is four or five branched: in Hymenoptera, it is the 3d from costal margin.

Mediastinal: relating to the longitudinal median line or area.

Mediastinal area: in Orthoptera, the area between median or mediastinal vein and the costal or front margin: = marginal area.

Mediastinal vein: in Orthoptera and Diptera, = suhcosta (Comst.): also, in Diptera, = auxiliary vein (Meigen).

Medio-eubital cross-vein: between media 4 and cubitus, connecting the two series (Comst.).

Medio-ventral line: in caterpillars, extends along middle of under side.

Medipectus: the under side of meta-thorax: the mesosternum.

Mediproboscis: the middle third of the flexed proboscis of muscid flies.

Medi-thorax: =mesothorax; q.v.

Medius: middle.

Mega- Megalo-: large.

Melanic: with a blackish suffusion.

Melanism: an abnormal or unusual darkening: a suffusion with blackish.

Mellifera: honey-makers: applied to bees as a whole.

Melliferous: honey-producing, or producers of honey.

Mellisugous: honey-sucking: a feeder on honey.

Member: any one of the external appendages.

Membranaceous: thin, skin-like, semi-transparent, like parchment: of a thin, pliable texture.

Membrana retinens: the stretched part of the membrane around the rectum of butterfly larvae, used in the change to the chrysalis.

Membrane -ana: any thin, transparent, flexible body tissue: specifically the wing tissue between the veins: in Heteroptera, the thin membranous tip of the hemelytra.

Membranous or eous: composed of membrane or skin-like tissue.

Membranule: the small opaque expansion at base of wings in Odonata.

Meniscoidal: with one side concave the other convex, like a round segment from a hollow sphere.

Menognatha: insects in which both young and adults feed by mandibles; e.g. the Orthoptera: see menorhyncha and metagnatha.

Menorhyncha: forms in which both young and adult take food by suction e.g. Hemiptera: see metognatha and metagnatha.

Mental suture: in Coleoptera, the line between mentum and gula.

Mentigerous: bearing or having a mentum.

Mentum: a labial sclerite bearing the movable parts; attached to and sometimes fused with the sub-mentum; corresponds to the (united) stipes of maxillae: in Coleoptera, what is usually called mentum is really submentum: in Diptera, the term is applied to the posterior oral margin: in Hymenoptera, is part of "tongue," the second joint bearing the labial palpi, paraglossae and ligula.

Merdivorous: feeding upon dung or excrement: see scatophagous.

Meriaeum: the posterior inflected part of the metasternum in Coleoptera.

Meroistic: ovaries that secrete yolk or vitellaginous cells as well as ova.

Mesad: extending or directed toward the median plane.

Mesal: pertaining to, situated on or in the median plane of the body.

Mesenchym: that portion of the mesoderm that produces the connective tissues of the body.

Mesenteron: the mid-gut, stomach or chylific ventricle: the middle portion of the primitive intestinal canal, lined with entoderm.

Mesepimeron: in Odonata: the sclerite between humeral and first lateral suture.

Mesepisterna: in Odonata,- the oblique lateral pieces of mesothorax, meeting dorsally in a ridge.

Mesially: at or to the middle.

Mesinfraepisternum: a sclerite formed between propleuron, mesepisternum, mesepimeron and second coxa.

Meso: middle: as prefix, drops the o when stem begins with a vowel.

Mesoblast: the middles germ layer of the embryos: = mesoderm.

Mesoderm:= mesoblast: gives rise to muscular and circulatory systems.

Mesodont::= amphiodont: q.v.

Mesomeros: the 2d to 5th abdominal segments in Lepidoptera.

Meson: the middle plane of the body.

Mesonotum: the primitively upper surface of the 2d or middle thoracic ring.

Mesophragma: an internal prolongation of the metapraescutum, affording attachment to some of the wing muscles.

Mesopleura: in Diptera, the space before the root of the wing between the dorso- and sternopleural sutures: in Hymenoptera, the piece below the insertion of the wings.

Mesopleural bristles: in Diptera, are inserted in the angle formed by the dorso-pleural and meso-pleural sutures.

Mesopleural suture: in Diptera, runs from the root of the wings downward and separates the meso-pleura from the pteropleura.

Mesopleuron: the lateral surface of the meta-thorax.

Mesosternal cavity: in Elateridae, the opening into which the prosternal spine or mucro is fitted.

Mesosternal epimera: in Coleoptera; the narrow pieces separating the meta-sternal from the meta-sternal episterna.

Mesosternal episterna: Coleoptera; on each side of mesosternum between anterior border and epimera; generally separated by a distinct suture.

Mesosternal lobes: in Orthoptera; = mesosternellum, q.v.

Mesosternellum: in Orthoptera, two median lobes of the mesosternum, one on each side of the deep median notch: in general, the sternellum of the mesothorax.

Mesosternum: the underside or breast of the meta-thorax.

Mesostethidium: = meso-thorax: q.v.

Mesostethium: the middle piece of the underside of meta-thorax, between the middle and hind legs.

Mesostigma: in Odonata, the spiracles of second thoracic segment.

Mesosulcus: a central longitudinal furrow of mesosternum in Hymenoptera.

Mesotarsus: the tarsus of the middle leg.

Mesothoracotheca: the pupal covering of the meso-thorax.

Mesothorax: the second or middle thoracic ring; bears the middle legs and the anterior wings.

Mesotergum: = mesonotum; q.v.

Meta-: posterior: used as a prefix to designate the third thoracic ring and its parts.

Metablastic: relating to the ecto- or meta-blast or ectoderm.

Metabola: insects with a complete metamorphosis in which the larva does not resemble the adult, and the pupa is quiescent.

Metabolism: is transformation: the whole process or series of changes of food into tissue and cell-substance and of these latter into waste products the first of these changes being anabolic, the second katabolic.

Metabolous: undergoing metamorphosis or transformation.

Metacoxal plate: in Coccinellidae, that portion of the first ventral segment included above the ventral lines visible on that segment.

Metagnatha: insects which feed with jaws when young and by suction, with tubular mouths when mature; e.g. the Lepidoptera: see menognatha and menorhyncha.

Metagonia: the hind or anal angle of a wing.

Metallic: having the appearance of metal: applied to a surface or color.

Metaloma: the sutural or inner margin of primaries.

Metamere: a segment, somite or athromere.

Metameric: made up of segments or metameres.

Metamerism: the arrangement in metameres.

Metameros: in Lepidoptera. the 6th to 8th abdominal segments.

Metamorphosis: is that series of changes through which an insect passes in its growth from egg through larva and pupa to adult: it is complete when the pupa is inactive and does not feed; incomplete when there is no pupa or when the pupa is active and feeds.

Metamorphosis dimidio: an incomplete transformation.

Metamorphosis perfecta: a complete transformation.

Metanotum: the primitively upper surface of the third or posterior thoracic ring: in Diptera, the oval arched portion behind, beneath the scutellum best developed in flies with long, slender abdomen: e.g. Tipulidae.

Metaphragma: the hindmost internal thoracic septum.

Metapleura: in Diptera, a swollen space at the outside of the metanotum, between it, the pteropleura and the hypopleura; in Hymenoptera, the piece behind and below the insertion of the hind wings.

Metapleural bristles: in Diptera, are inserted in the metapleura.

Metapneustic: larva, chiefly dipterous, in which the spiracles are confined to the posterior segment.

Metapnystega: that circular area of metanotum behind the postscutellum.

Metapodeon: the abdomen behind the podeon or petiole in Hymenoptera.

Metasternal: relating or attached to the metasternum.

Metasternal epimera: small sclerite separating the metasternal episterna from the ventral segments.

Metasternal episterna: sclerite situated on each side of the metasternum, immediately behind the mesosternum epimera.

Metasternellum: the sternellum of the metathorax.

Metasternum: the underside or breast of the metathorax.

Meta-stethidium: = meta-thorax; q.v.

Metastigma: in Odonata, the spiracles of third thoracic segment.

Metastoma: in Orthoptera:= hypopharynx: q.v.

Metatarsus: applied to basal joint of tarsus, where that differs greatly in length or otherwise from the other joints: see sarothrum.

Metatergum: = metanotum; q.v.

Metathoracotheca: the pupal covering of the meta-thorax.

Metathorax: the third thoracic ring or segment; bears the hind legs and second pair of wings; variably distinct; sometimes closely united with the mesothorax and sometimes appearing as a portion of the abdomen.

Metatype: is a specimen named by the author after comparison with the type; according to some, it should be also a topotype.

Metazona: in Orthoptera, the dorsal surface of the prothorax behind the principal sulcus.

Metepimeron: in Odonata, lies behind the second lateral suture and extends ventrally to the sternum.

Metepisternum: in Odonata, is the sclerite between the first and second lateral thoracic sutures.

Meter: the standard of length in the metric system = 39.37 inches: see centimeter and millimeter.

Meticulose -us: is a maculation in the form of a series of colored flames.

Metinfraepisternum: in Odonata; the sclerite just above base of 3d coxa; below metepisternum and before metepimeron.

Metochy: the relation borne to ants by the tolerated guests in ant- hills; demanding nothing from and giving nothing to the ants; see symphily and synecthry.

Metopidium: the anterior declivous surface of prothorax in Membracidae.

Micans: shining: also a surface of which only parts are shining.

Microchaetae: small bristles, as opposed to macrochaetae, in Diptera.

Microergates: the dwarf workers among ants.

Micron: the unit of microscopic measurement = 001 mm.: represented by the symbol μ: the symbol μμ represents .001 of a micron. {Scanner's note: the μμ notation would no longer be valid.}

Micropterous: small winged.

Micropterism: the tendency to produce small wings; applied to a line of variation.

Micropyles: minute openings in the egg, through which spermatozoa enter.

Microsomites: small secondary rings or somites of the macrosomites in the embryo, which afterward become the body segments.

Microthorax: a supposed thoracic ring between the head and prothorax.

Middle apical area: = internal area; q.v.

Middle field: = discoidal field; q.v.

Middle lobes: of pronotum in Orthoptera; see lobes.

Middle pleural area: in Hymenoptera; the median of the three areas between lateral and pleural carinae: = 2d pleural area.

Mid-dorsal thoracic Carina: a ridge or elevated line at the meeting of the mesepisterna in Odonata.

Mid-gut: the chylific ventricle with the caecal glands, tubes or pouches.

Mid-intestine: = mid-gut.

Migrants: applied to that brood of plant lice which flies from one to an alternate food plant: any forms that fly from the place where they were born for food or other purposes.

MM.: = Millimeter: .001 meter = .039 of an inch: roughly 25 mm. are counted to an inch in measuring insects. {Scanner's comment: modern usage is lower case. So: mm.}

Mimetic: when a species mimics or resembles another or some other object in appearance; but not in structure and other characters.

Mimicry: strictly, the resemblance of one animal to another not closely related animal, living in the same locality; often loosely used to denote also resemblance to plants and inanimate objects: Batesian mimicry is where one of two similar species is distasteful (so-called model), the other not distasteful (so-called mimic);

Müllerian mimicry is where both species are distasteful.

Mines: applied to galleries or burrows between upper and under surface of leaf tissue, when made by larvae: they are linear, when they are narrow and only a little winding; serpentine, when they are curved or coiled, becoming gradually larger to a head-like end: trumpet- mines, when they start small and enlarge rapidly at tip; blotch mines, when they are irregular blotches tentiform, when the blotch mines throw the leaf into a fold on one side.

Miniate -us: of the color of red lead [vermilion with a slight admixture of dragon's blood].

Mirror: in Cicada; see specular membrane.

Mitosoma: the middle piece of a developing spermatozoon.

Mobile: movable: having the power of motion.

Model: see mimicry.

Modioliform: globular, truncated at both ends; like the hub of a wheel.

Mola or Molar: the ridged or roughened grinding surface of the mandible: when the mandible is compound, the molar corresponds to the subgalea of maxilla.

Monarsenous: that kind of union where one male suffices for many females.

Moniliform: beaded like a necklace.

Monochromatic: of one color throughout.

Monodactyle: with a single movable claw which closes on the tip of the other leg structures as in some parasitica.

Monodomous: ants in which each colony has one nest only.

Monoecious: when both sexual elements or glands exist in one individual.

Monogamous: a union where a female is fertilized by one male only.

Monomeri: insects with one-jointed tarsi.

Monomorphic: species of which only one sex (female) is known to exist.

Monophagous: insects feeding upon only one species or genus of plants.

Monothelious: a union where one female is fecundated by many males.

Monotrocha -ous: Hymenoptera in which the trochanters are single: having legs in which the trochanter is one-jointed.

Monotypical: a genus described from a single species, no other being known; or described from a single specified species with which are associated others believed to be identical in structure: see isotypical and heterotypical.

Moult: a period in the transformation when the larva changes from one instar to another: the cast skin of a larva that has moulted.

Mouth: the anterior opening into the alimentary canal, where the feeding structures are situated and in which the food is prepared for ingestion.

Mouth-parts: a collective name including labrum, mandibles, maxillae, labium and appendages = trophi.

Mucoreus: mouldy: a surface covered with small, fringe-like processes.

Mucro: a long, straight or curved process terminating in a point: the pro-sternal process in Elateridae: the terminal spine or process of an obtect pupa: "the median posterior point of the epigastrium when differentiated by elevation."

Mucronate: terminated in a sharp point.

Mucrones: in Collembola the two small end pieces of the furcula, proceeding from the dentes.

Mullerian association: a group of species belonging to different genera, often different families or even orders, having similar colors, possessing more or less distasteful qualities and living in the same locality.

Muller's thread: the common terminal thread of all the ovarian tubes.

Multangulate: with many angles.

Multi-: many; used as a prefix, often without the i.

Multiarticulate: with many joints or segments.

Multilocular: with many large cells, spaces or cavities.

Multipartite: divided into many parts.

Multiplicate: with many longitudinal folds or lines of plication.

Multispinose: with many spines.

Mumia: the pupa.

Munite -us: armed; provided with an armature.

Muricate -us: armed with sharp, rigid points.

Murinus: mouse colored [gray with some yellow].

Mushroom bodies: two stalked, mushroom-like bodies arising from procerebral lobes; supposed to be the seat of insect intelligence.

Muscle: the fleshy fibres of the insect body that serve to move the appendages and other body organs.

Mute: silent: without power to produce audible sound.

Mutic -us: unarmed: lacking processes where such usually occur.

Mutici: Acridiids without a posternal spines.

Mutilate -us: cut off: mutilated: abbreviated: not complete.

Mycetophagous: feeding upon fungi.

Myiasis: disease or injury caused by the attack of dipterous larvae.

Myoblast: a cell that produces muscular tissue.

Myrmecology: that branch of entomology that deals with ants.

Myrmecophilous: ant-loving: applied to insects that live in ant nests.

Mystacine -us: bcarded: with a hairy fringe above mouth or on clypeus.

Mystax: in Diptera; a patch of hair or bristles above the mouth, on the lower part of the hypostoma above the vibrissae.

Mytiliform: shell-like; as the middle feet in some aquatic Hemiptera.

N

Nacreous: pearly: resembling mother of pearl := margaritaceous.

Nail: a tarsal claw: specifically the stout pointed claws in predatory Heteroptera = unguis.

Naked: not clothed: lacking vestiture: a pupa when not inclosed in a cocoon or other covering.

Nasal suture: =clypeal suture; q.v.

Nasus: anterior termination of the face in certain Hymenoptera: the clypeus or a modification of it: in Odonata, the upper portion of the clypeus = supra-clypeus = postclypeus.

Nasuti: that type of termite soldiers that have the head prolonged into a point.

Natatorial -ions: formed for swimming.

Navicular: boat-shaped = cymbiform.

Neanic: referring to the pupal stage.

Nearctic: temperate and arctic North America, including Greenland.

Nebula: a cloud: a vague, indefined, dusky shading.

Nebulous -ose: cloudy: without definite form or outline.

Neck: the slender connecting structure between head and thorax of such insects as have the head free: any contraction of the head at its juncture with the thorax.

Necrophagous: living in or on carrion.

Nectaries: honey-tubes, cornicles, siphuncles; q.v.

Nematid: thread-like.

Nematocera: = nemocera; q. A.

Nematocerous: with long, thread-like antenna.

Nemocera: Diptera with long, at least six-jointed antennae.

Nemoglossata: bees with a thread-like tongue.

Nemoricolous: living in open, sunny woods.

Neogeic: belonging to the Western Hemisphere or New World: see gerontogeic.

Neolepidoptera: all haustellate Lepidoptera, except the generalized Micropterygidae; mandibles not functionally present; pupa incomplete or obtect: see paleolepidoptera and protolepidoptera.

Neoteinic: applied to complemental females in Termites because, though reproductive, they retain some juvenile characters.

Neotropical: that part of the earth's surface embraced in the greater part of Mexico, West Indies and South America.

Neotype: a specimen identified with a species already described, and selected as a standard of reference where the original type or co-types are lost or destroyed.

Nephridia: tubular structures functioning as kidneys in Annelids, Mollusks, etc. and incorrectly used as = malpighian tubules; q.v.

Nepionic: that stage of development immediately succeeding the embryonic; proposed as a substitute for larval.

Nerinaeum: a ventral thoracic sclerite between the metasternum and posterior coxa in some Coleoptera.

Nerve: a thread-like structure, composed of delicate filaments whose function it is to transmit sensations or stimuli to or from a ganglion or from or to any part of the body or its appendages.

Nerves: sometimes used to = veins, in wing structures.

Nervi: belonging or referring to the nerves.

Nervulation: arrangement of the nerves: specifically applied to the arrangement of the chitinous framework of wings and thus= venation; q.v. Nervules or Nervures: the rod or vein-like structures supporting the membranes of wings and = veins and veinlets; q.v.

Nervuration: = nervulation and venation: q.v.

Neural canal: an incomplete tunnel on the floor of meso- and metathorax, formed by fusion of apodemes, serving for the reception and protection of the ventral nerve cord and for the attachment of muscles.

Neural groove: is that furrow in the primitive layer of the embryo in which the nerve cord is formed.

Neuration: = venation; q.v.

Neurilemma: the external sheath of a nerve fibre.

Neuroblast: the large cell in the early embryo, from which the nervous system develops.

Neuromere: that part of a body segment pertaining to the nervous system.

Neuroptera: nerve-winged: an ordinal term applied to insects with four net-veined wings; mouth mandibulate: head free: thorax loosely agglutinated; metamorphosis complete: in its older use, the term applied to all net-veined insects irrespective of metamorphosis or thoracic structure.

Neuropteroidea: like the Neuroptera in the wide sense; applied to those living insects included by Linnaeus in his Neuroptera; also to those extinct forms which have a general resemblance to them.

Neurospongium: a granular matrix in the periopticon of the insect eye.

Neuter: the term applied to workers or undeveloped females in some Hymenoptera: indicated by * or *, an imperfect form of Venus sign.{Scanner's comment: I have no characters to represent the symbols. One is like the normal female (Venus) sign, but with no cross stroke on the downward stroke. The other is the symbol for Mercury or of Hermaphroditus, like a Venus sign crowned with crescent horns.}

Nidificate: to nest: applied when eggs are placed in a prepared receptaculum.

Niger: black.

Nigricans: black, tinged with gray.

Nits: the eggs of sucking lice; specifically when attached to a hair: in general, though rarely, applied in the singular to an egg.

Nitidus: shining: applied to a highly polished, smooth surface.

Niveous -eus: snowy white.

Nocturnal: species that fly or are active at night.

Nodal furrow: in Odonata; a transverse suture, beginning at a point in costal margin corresponding to the nodus, and extending toward inner margin.

Nodal sector: in Odonata; = media 2 (Comst.): arises from upper sector of arculus near nodus and extends to outer margin.

Node: a knot or knob: in the plural refers to the small segment or segment between thorax and main portion of abdomen in ants.

Nodiform: in the form of a knot or knob.

Nodicorn: with antennae that have the apex of each joint swollen.

Nodose -us: knotted or with knots; a body with one or more knotted parts a sculpture with almost isolated knots.

Nodule: a little knot, lump or node.

Nodulose -us -ate: with small nodes or nodules: a surface sculpture of knots or links, connected by an undulating line.

Nodus: in Odonata; a stout, oblique, short vein at the place where the anterior margin of the wings is sometimes drawn in.

Nopalry: a plantation of cacti for raising cochineal insects.

Normal: of the usual form or type: not out of the ordinary.

Notate: marked by spots: with a series of depressed marks as a sculpture.

Notched: indented, cut or nicked; usually a margin.

Notocephalon: in some aquatic Hemiptera, that part of the head which is apparent from a dorsal aspect.

Notodont: with toothed backs: applied to a series of moths whose larvae are more or less conspicuously humped on dorsal surface.

Notopleural suture: = dorso-pleural suture; q.v.

Nototheca: that part of the pupa covering upper surface of abdomen.

Notum: the dorsal or upper part of a segment: = tergum.

Nucha: the upper surface of the neck connecting head and thorax.

Nucleate: with, or having a nucleus.

Nucleolus: the small portion of matter in the nucleus most readily affected by staining fluids.

Nucleus: a well-defined, differentiated, round or oval body imbedded in the cell contents.

Nude -us: naked: a surface devoid of hair, scales or other vestiture.

Nuditas: = nudity.

Nudity: the state of being naked or bare of vestiture.

Nurses: worker ants or worker bees which care for the eggs, larvae and pupae, but do not forage, the latter function being taken up later, when nursing is given up.

Nutant: nodding; the tip bent toward the horizon.

Nutritive chamber: an enlarged section of ovarian tube, filled with granular nutritive material used in developing the egg cells.

Nymph: the larval stage of insects with incomplete metamorphosis: applies also to their pupal stage, and sometimes used as = pupa.

Nympha inclusa: = coarctate pupa; q.v.

Nymphipara: applied to insects that bear living young in an advanced stage of development: see also pupipara.

O

Ob-: as a prefix, means inversely.

Obconic: conic, with the apex pointing downward.

Obcordate: inversely heart-shaped, with the point applied to the base of another object or part.

Obese -us: unnaturally distended: usually applied to the abdomen.

Oblate: flattened; applied to a spheroid of which the diameter is shortened at two opposite ends.

Oblique: any direction between perpendicular and horizontal.

Oblique vein: in Odonata; an apparent cross-vein situated between M2 and Rs, distal to the level of the nodus and inclined obliquely, from its front end, backward and outward; in reality the basal part of Rs.

Obliterate: nearly washed out; indistinct.

Oblong: longer than broad.

Obovate: inversely egg-shaped; the narrow end downward.

Obpyriform: inversely pearshaped.

Obscure: not readily seen: not well defined.

Obsite-us: a surface covered with equal scales or other bodies.

Obsolete: nearly or entirely lost: inconspicuous.

Obtect: wrapped in a hard covering.

Obtected: applied to pupae when they are covered with a chitinous case which confines and conceals all appendages, though their outlines may be marked on the surface: see free, and coarctate.

Obtuse: not pointed: an angle greater than a right angle: opposed to acute. Obtuse-angulate: two markings or margins meeting so as to form an obtuse angle.

Obtusilingues: short-tongued bees with the tip obtuse or bifid: see acutilingues.

Occipital foramen: the opening in the occiput, opposed to a similar opening in the prothorax: = foramen magnum.

Occipital margin: in Mallophaga, the posterior margin of the head.

Occipito-orbital bristles: in Diptera; situated on posterior orbit of eye.

Occiput: that part of the head behind the vertex: in Diptera, the whole posterior surface of the head: in bees, the space between the vertex and the neck.

Occlusor: applied to muscles which close an opening; e.g. spiracles.

Occult -us: hidden; concealed from superficial view.

Ocellar bristles: in Diptera, are situated close to the ocelli, usually directed forward: often absent.

Ocellar ribband: a crescent-shaped, smooth thin belt across the eye region in butterfly chrysalids.

Ocellar triangle: a triangle, indicated by grooves or depressions, on which the ocelli are situated; Diptera.

Ocellate: eye-like in appearance: in Lepidoptera, spots on the wings, bordered by a colored iris or ring, and usually with a pupil.

Ocelli: plural of ocellus; q.v.; = stemmata.

Ocelligerous: supplied with, or bearing ocelli.

Ocellus: a simple eye, consisting of a single convex or bead-like lens, which conveys an image to a retina.

Ocelli occur in larvae and, singly or in small groups, in adults: the compound eyes are made up of numerous ocelli.

Ochraceous: yellow with a slight tinge of brown [pale cadmium yellow and brown ochre].

Ochraeus -eus: = ochraceous.

Ochro-leucus: dilute ochraceous.

Ocular emargination: in Mallophaga, a lateral emargination of the head in which the eye is received posteriorly.

Ocular fleck: in Mallophaga, a small, intensely black spot of pigment in the eyes.

Ocular fringe: in Mallophaga, closely set small hair on posterior half of ocular emargination, sometimes extending on temporal margin.

Ocular lobes: of brain = procerebrum; q.v.

Ocular sclerite: the first or protocerebral segment of the head.

Ocular tubercles: in Aphids, are a group of prominent facets on the hinder part of each eye.

Oculi -us: the eyes: an eye: refers to the compound eyes.

Oculocephalic: applied to that pair of imaginal buds destined to produce the cephalic region in Hymenoptera.

Odona: toothed: applied to Odonata by Fabricius because of the long teeth on the maxilla and labium.

Odonata: net-veined insects with mandibulate mouth; head free; thorax agglutinate; wings similar, elongate, flat; metamorphosis incomplete; copulatory organs of male near base of abdomen, separate from the testes. {Scanner's comment: Dragonflies and damselflies}

Odonate: bearing toothed mouth parts, like those of dragon flies.

Odoriferous: diffusing an odor; applied to glands or secreting organs.

OEcology: see ecology.

OEdagus: the penis.

OEnocytes: large yellow cells arranged segmentally in clusters, in each side of body cavity: associated with blood and fat bodies.

OEsophageal bone: a plate below anterior part of oesophagus in Psocidae.

OEsophageal bulb: = sub-clypeal pump; q.v.

OEsophageal diverticula: = food reservoirs (q.v.); but more generally applied also to any sac-like structure connected with the gullet.

OEsophageal lobes: form posterior portion of brain or tritocerebrum.

Oesophageal valve: a funnel-like folding of the oesophagus, extending into the chylific ventricle in some insects, and forming a valve that controls the entrance of food into that organ: = cardiac valvule.

Oesophagus: the gullet: that part of the alimentary canal between the mouth and the crop.

Olfactory: pertaining to the sense of smell: those lobes of the deutocerebrum from which the nerves supplying the antennae arise.

Oligonephria: applied to insects with few urinary (Malpighian) tubes.

Oligoneura: having few wing veins: specifically applied in Diptera to Cecidomyids.

Olivaceous: with a tinge of olive-green, usually as a shading [olive green].

Omaloptera: the pupiparous flies.

Omia: the shoulders: the lateral anterior angles of an agglutinated thorax, when they are distinct:= see umbone: in Coleoptera; a corneous sclerite to which the muscles of the anterior coxa are attached; also the lateral margin of the prothorax; also the lateral margin of the scutellum in Carabids and Dytiscids.

Ommateum: the compound eye.

Ommatidium -ia: one of the elements of which the compound eye is composed.

Omnivorous: a general feeder upon animal or vegetable food, or both.

Oncus -i: a welt: applied to welt-like ridges on caterpillars.

Onisciform: shaped like a wood-louse, Oniscus sp.; applied to certain Lycaenid and other caterpillars.

Ontogenetic: relating to the development of the individual.

Ontogeny: the development of the individual as distinguished from that of the species: see phylogeny.

Onyches: claws of tarsi.

Onychium -ia: small processes between the tarsal claws in many Diptera; see empodium: a more or less retractile process on the feet of some beetles: in Hymenoptera, the apical tarsal joint bearing the claws: see also arolium and pulvillus.

O?blast: the primitive germinal nucleus of an egg.

O?genesis: the process of egg-formation.

O?lemma: the cell wall of an egg: see vitelline membrane.

O?theca: the covering or case over an egg mass, as in certain Orthoptera: see egg case.

Opacus: opaque; a surface without any lustre.

Opalescent: with a bluish white lustre, as in opals.

Opalinus: = opalescent; q.v.

Opaque: without lustre: not transparent.

Operaria: the workers in Hymenoptera.

Operative: in working order or actually working.

Opercula: two plates covering the vocal structure of Cicada, beneath.

Operculum: a lid or covering: in Diptera, the chitinous envelope covering the lower part of the muscid mouth; the labrum-epipharynx of Dimmock: the scutes covering the meso-thoracic stigmata: in Aleurodidae, the lid-like structure closing the vasiform orifice; q.v.

Ophthalmic: relating to the eye.

Ophthalmotheca: that part of the pupa that covers the eyes.

Opisthogoneate: having the organs of generation at hind end of body.

Opisthogonia: the anal angle of the secondaries.

Opposite: placed over against, or opposed to.

Optic: relating to the organs of vision.

Optic ganglia: are at the sides of the procerebrum and innervate the compound eyes.

Optic lobes: the laterals lobes of the procerebrum in which are centered the nerves supplying the organs of vision.

Opticon: the first of a series of three ganglionic swellings in the optic nerve: see epiopticon and periopticon.

Optic segment: =procerebral segment; q.

Optic tract: is the perceptive portion of the compound eye.

Ora: a border: specifically in some Coleoptera, the lateral margin of prothorax.

Ora coleopterorum: the margin of the elytra.

Orad: toward the mouth.

Oral: pertaining to the mouth.

Oral cavity: the mouth; = buccal cavity.

Oral fossa: in Mallophaga, a furrow lying in front of the mandibles.

Oral segment: that ring or segment which bears the mouth.

Orbicular: round and flat, the diameters of the plane equal: in sonic moths, a round or oval macula in the median cell.

Orbit: an imaginary border around the eye: in Diptera the orbits are divided into vertical or superior; frontal and facial or anterior; of the cheek or inferior; occipital or posterior.

Orbital sclerite: a narrow sclerite encircling some eyes.

Order: one of the primary divisions of the Class Insecta, based largely on wing structure and then usually ending in -ptera.

Ordure: excrement; usually applied to such as is foul or offensive.

Orichalceous: = aurichalceous; q.v.

Oriental: in geographical zoology as used by Wallace, that part of the earth's surface including Asia east of the Indus River, south of the Himalayas and the Yangtse-kiang watershed, Ceylon, Sumatra, Java and the Philippines.

Orificium: the anal or genital opening.

Original type: is the actual specimen from which a published description is prepared.

Orismologia -y: the defining of scientific or technical terms.

Orthoptera: straight winged: an ordinal term applied to insects in which the primaries are not used in flight, but cover the longitudinally folded secondaries; mouth mandibulate; head set into prothorax, the latter free; metamorphosis incomplete.

Orthorrhapha: that section of Diptera in which the pupa escapes from larval skin through a T-shaped opening on back: see cyclorrhapha.

Orthorrhaphous: straight-seamed.

Os: the mouth of insects, in general.

Oscillation: a vibrating or swinging from side to side.

Osculant: intermediate in character between two groups or series.

Osmaterium -ia: fleshy, tubular, eversible processes producing a penetrating odor, capable of being projected through a slit in the prothoracic segment of certain Papilionid caterpillars, and from openings elsewhere in the bodies of other forms. {Scanner's comment: currently the only spelling I can find is "osmeterium". This given spelling is almost certainly an error on someone's part. Not only do the earliest books that I can find spell it "osmeterium", but the Greek root is "osme".}

Osmosis: the tendency of liquids to pass or diffuse through a membrane or septum.

Osselet: = ossicle; q.v.

Ossicle: a small nodule of chitin resembling a bone.

Ossicula: small corneous pieces that serve in the articulation of the wings to the thorax.

Ostia: the slit-like openings of the heart.

Ostiolar canal: a marginal furrow leading from the ostiole.

Ostiole: in Heteroptera, the openings at the sides of meso- and meta- thorax, through which an odoriferous fluid is excreted.

Ostium: singular of Ostia; q.v.

-osus; an affix, signifying saturation, or the possession of the quality expressed in the stem word.

Otocyst: an auditory or ear-like vesicle.

Otolith: a little ear-bone: granules or concretions found in an otocyst.

Outer lobe: of maxilla = galea; q.v.

Outer margin: the outer edge of wing, between apex and hind angle.

Ovo, Ovum: the eggs; an egg.

Ova glebata: eggs laid or concealed in lumps of dung.

Ova imposita: eggs laid in the substance that is to serve as food for the larva.

Oval: egg-shaped, with both ends similar.

Ova pilosa: eggs that are covered with hair: usually from the abdomen of the female.

Ovarian tube: a tubular structure in which are developed the cells forming the future ova: a single one of the mass which, taken together, form the ovaries.

Ovaries: a mass of ovarian tubes, lying one on each side of the body cavity of the female, in each of which tubes eggs or ova are developed: the individual tubes of an ovary all converge to one oviduct.

Ovariole: an ovarian tube: q.v.

Ovary: singular of ovaries; q.v.

Ovate: in outline, egg-shaped or oval.

Oviduct: the tube through which the egg passes from ovarian tubes into vagina: sometimes used in the sense of ovipositor: q.v.

Oviform: egg-shaped.

Oviparous: where reproduction is through eggs laid by the female.

Oviposition: the act of depositing the eggs.

Ovipositor: the tubular or valved structure by means of which the eggs are placed; usually concealed; but sometimes extended far beyond the end of the body.

Oviscapt: = ovipositor; q.v.

Ovivalvule: in Ephemeroptera; is an appendage of the female reproductive organs.

Ovoviviparous: when living young are born from eggs which are hatched in the body of the parent.

P

Pacific coast humid area: is that faunal area of the transition zone comprising the western parts of Washington and Oregon between the Coast Mountains and Cascade range: parts of northern California and most of the coast region from near Cape Mendocino south to the Santa Barbara Mountains. To the south and east it passes into the arid transition and in places into the upper Sonoran.

Pad: the pulvillus, or that part of it which is capable of extension and retraction in some Coleoptera.

Paddle: the flattened joints of posterior tarsi in aquatic Hemiptera.

Paedogenesis: reproduction in the sexually immature or larval stage.

Paedogenetic: reproducing in the sexually immature or larval stage.

Pagina: the surface of a wing: P. superior, is the upper surface; P. inferior, the lower surface: in Orthoptera, the external flattened surface of the caudal femora.

Pagiopoda: Heteroptera, in which the posterior coxae are not globose and the articulation is a hinge joint: see trochalopoda.

Pagiopodous: those Heteroptera which have the coxae of the hind legs hinged and the femora grooved.

Pala: the shovel-shaped tarsal joints in many aquatic Heteroptera.

Palate: = hypopharynx; q.v.

Paleace: chaff or chaffy: = paleaceous.

Paleaceous: chaffy in appearance.

Palearctic: relating to that part of the earth's surface including Europe, Africa north of Sahara, and Asia as far south as the southern edge of the Yang-tse-Kiang watershed and the Himalayas, and west to the Indus River.

Paleodictyoptera: an ordinal name suggested by Scudder for Paleozoic insects which cannot be assigned to existing orders.

Paleolepidoptera: haustellate Lepidoptera in which the mandibles are distinct and the pupa is free: includes the Micropterygidae only: see protolepidoptera and neolepidoptera.

Pallescent: becoming pale or light in color or tint.

Pallette: the disc-like structure composed of three tarsal joints, on the anterior feet of male Dytiscidae.

Pallid: pale or very pale.

Pallide-flavens: pale or whitish yellow.

Pallidus: of a pale, cadaverous hue [a very dilute brown pink].

Pallium: an erectile membrane partially closing the open cavity formed by the walls of the sub-genital plate in Melanopli.

Palma: the basal segment of the anterior tarsus when it is broadened or specifically modified.

Palmate: like the palm of the hand, with finger-like processes.

Palmula: = pulvillus; q.v.

Palp: a mouth feeler or palpus.

Palpal: belonging, relating or attached to the palpi.

Palparium: in some Coleoptera, and other insects, the membranous support to which the labial palpi are attached, and which permits an amount of extension not possible when they are fixed.

Palpi: plural of palpus; q.v.

Palpicorne: with long, slender, antenna-like palpi.

Palpifer: any palpus-bearing part: specifically, a small sclerite hearing the maxillary palpus and itself articulated to the stipes.

Palpiferous or -gerous: bearing a palpus.

Palpiger: that sclerite of the labium to which the labial palpus is attached corresponds to the palpifer of the maxilla and has been used in the same general sense.

Palpigerous stipes: in Coleopterous larvae, = palpifer; q.v.

Palpuli: the maxillary palpi in Lepidoptera, when visibly developed.

Palpus: a mouth feeler: tactile, usually jointed structures borne by the maxillae (maxillary palpi) and labium (labial palpi).

Panduriform: violin shaped: oblong, with rounded ends, medially constricted.

Panorpatae: = Mecoptera; q.v. Pantherine: in color, almost like cervinus; q.v.: in maculation, like those of a panther. Papilioform: formed like a butterfly wing.

Papilionaceous: butterfly-like.

Papilla: a minute, soft projection: specifically the modified ligula in silk spinning caterpillars.

Papillary: with nipple-like processes that have the tips rounded.

Papillate -us: a surface with small elevations which are porous at tip.

Papilliform: like a wart or pimple.

Papillose -us: pimply; a surface covered with raised dots or pimples.

Pappose: downy: made up or clothed with pappus.

Pappas: a fine down.

Para-: next to; near by; at the side of.

Parabiosis: see symbiosis.

Parabolic: elongately rounded.

Paraclypeal piece: in lepidopterous pupa, occurs in some of the generalized families on each side of the maxillary palpi.

Paraclypeus: in caterpillars, a narrow sclerite bordering clypeus at sides.

Paraderm: the limiting membrane enclosing the pronymph of Muscidae.

Paraglossa: a paired, labial structure, lying at each side of the ligula; often connected with it; sometimes free and two-jointed: corresponds to the galea of maxilla.

Parallel: along the same line and nearly equidistant.

Paranal: at the side of or next to the anus or anal structures.

Paranal forks: two lateral, bristle-like structures in some caterpillars, used to throw frass pellets to a distance.

Paranal lobes: = podical plates; q.v.

Paraphysis: the chitinized thickenings or lateral ingrowths, usually situated at the base of the lobes in certain Diaspid genera.

Parapleura: the sternal side pieces in beetles.

Parapodia: the pro- or false legs: more specifically applied to the jointed abdominal processes of the Symphyla.

Parapsidae: the small sclerites on each side of the scutellum in Chalcids, marked by the parapsidal grooves.

Parapsidal furrows: longitudinal grooves on each side of the mesoscutum of Proctytrypidae separating the parapsides from the middle lobe.

Parapsidal grooves: the grooves or furrows on each side of the Chalcid scutellum, defining the parapsidae.

Parapsides: lateral pieces of the meso-scutum, separated from the mesal portion by the parapsidal furrows.

Parapteron -era: small sclerites, articulated to the dorsal extremity of the episternum, just below the wings; absent on prothorax = the tegulae of Hymenoptera, and patagia of Lepidoptera: have been homologized with the elytra of Coleoptera.

Parasita: = parasitica: q.v.

Parasite: a species that lives in or on another animal or insect, and depends upon the tissue of the host for its food supply.

Parasitic: living on or in some other animal or insect in such a way as to derive all nourishment from the tissues of the host.

Parasitica: the sucking lice: wingless; without metamorphosis; mouth with piercing lancets; thoracic segments similar; habits epizo?tic.

Parasitism: a form of symbiosis in which one party lives upon or at the expense of the other, makes no return and destroys its host: see symbiosis; commensalism.

Parastigma: = pterostigma; q.v.

Parastigmatic glands: small, circular glands, which secrete a waxy powder, sometimes present around the spiracles of Coccidae.

Paratype: is every specimen of the series from which the type was selected see type and cotype.

Parse: sparse or sparsely.

Parcidentate: with few teeth.

Parenchymatous: composed of soft cellular and connective tissue.

Parietes: walls: the perpendicular sides of elevated bodies.

Paronychium-ia: one or more bristle-like appendages of onychia; q.v.

Parthenogenetic: see asexual.

Parthenogenesis: reproduction by direct growth of germs from egg-cells without fertilization by the male element: as in plant lice, gall wasps, etc.

Particolored: partly of one, partly of another color: divided into two or more color fields.

Partite -us: divided; e.g. the eyes of Gyrinidae. Parum: not much.

Patagium -ia: in Lepidoptera, those sclerites that cover the base of primaries: often used as synonymous with tegula and squamula, q.v.: assigned by some writers to the pro-, by others to the meso-thorax: homologized with the paraptera of meso-thorax.

Patella -ae: the modified joints of anterior tarsi in Dytiscidae; plate- like, horny or spongy structures on the undersides of the tarsal joints: the first coxal joint.

Patellar: pertaining to the knee-joint or cap.

Patellariae: in Dytiscids, the unequal, cup-like impressions on the underside of the patella.

Patens, Patentes: open; diverging; spreading apart.

Patric: home or country of origin.

Patulous-ose: open, spreading.

Paunch: a crop-like accessory pouch in some Mallophaga: any pouch- like appendage of the alimentary canal.

Paurometabolous: metamorphosis in which the changes of form are gradual and inconspicuous: e.g. Orthoptera and most Rhynchota.

Pavillions: the sheds or cells sometimes built by ants as a shelter for groups of plant lice.

Paxilla: a small stake or peg: a bundle of spicular processes.

Pearlaceous: having the appearance of pearl.

Pecten: a comb: in Hymenoptera, rigid, incurred setae on the basal parts of maxilla and labium: the rows of spines on the feet of pollen- gathering bees: any series of bristles arranged like a comb: in mosquito larvae the comb-like teeth on the breathing tube.

Pectinate: comb-shaped: with even branches like the teeth of a comb.

Pectinato-fimbriate: having pectinations that are fringed with hair.

Pectoralis: relating to the breast.

Pectoral plate: in Coleoptera, the sternum.

Pectunculate: with a row of minute appendages like the teeth of a comb: e.g. some maxillary structures.

Pectus: the ventral portion of thorax: variably applied in Coleoptera, for the entire meso- and meta-thorax: also the pro- and meso-sternum: in Diptera, is the inferior surface of the thorax between the legs.

Pedal line: in caterpillars: extends along the base of the feet.

Pedal tubercle: on the thoracic and abdominal rings of caterpillars: on the anterior side of leg-base and, correspondingly, on apodal segments: is VII of the abdomen where it consists of three setae: VI of the thorax where the setae are not numbered: constant (Dyar).

Pedamina: the aborted fore-legs of Nymphalid butterflies.

Pedate: foot-bearing, or having feet.

Peddler: applied to the larvae of such Cassid beetles as carry their excrement and cast skins on an anal fork.

Pedes: the feet, or really, legs.

Pedicellus or Pedicle: the third joint in a geniculate antenna: forming the pivot between scape and funicle: in general, a stalk or stem.

Pediculosis: a state of lousiness, or the abnormal condition caused by the multiplication of lice on the body: sec phthiriasis.

Pediculous: lousy: infested with lice.

Pedigerous: feet bearing.

Peduncle: a stalk or petiole: the basal joint of the antenna in Homoptera: the smaller of the two stalks supporting the mushroom body; q.v. Pedunculated: set on a stalk or peduncle: attached by a slender stalk or neck.

Pelagic: inhabiting the sea, far from land.

Pellicles: the exuviae or cast larval skins of many insects: in Coccidae more especially applied to the hardened larval skin attached to the puparia of Diaspinae.

Pellit: covered with long, drooping hairs, irregularly placed.

Pellucid: colored, but transparent: sometimes applied when there is no color.

Pelotons: the balls of fine tracheae in larvae, developed to supply the adult organism.

Pelottae: =arolia: q.v.

Peltate: shield- or target-shaped.

Penal claspers: in Proctytripidae. lateral fringed processes of the male genitalia.

Penal sheath: the horny outer covering of the penis.

Pencil: a little, elongated brush of hair: in Diptera, applied to a group of sensory hairs on the flagellum of the antenna.

Pendent: hanging down.

Pendulous: drooping: hanging free, attached to one end only.

Penes: open, slit-like structures of the seminal vesicles to the outer surface in Euplectoptera.

Penicillate: with a long, flexible brush or pencil of hair: often at the end of a thin stalk.

Penicilli: a pair of small style or cerci-like pieces on the tip of the 8th dorsal segment of abdomen of various male Hymenoptera.

Penicilliform: pencil-like or shaped.

Penicillum: a pencil or brush of long hair attached at the end of a stalk as long as the brush, and folded in a lateral groove in some male moths.

Penis: the flexible, membranous, intromittent organ of the male.

Pennaceous: = pennate.

Fermate: feathered or bearing feather-like processes.

Penniform: feather-like in form.

Pentagon -um: a five-sided figure with five equal or unequal angles.

Pentamera: Coleoptera with 5-jointed tarsi. Pentamerous: species having five-jointed tarsi.

Penultimate: next to the last.

Peptone: a soluble proteid compound produced by the digestion of albummenoid food substances.

Per-: as a prefix, means very: extremely: through.

Percipient: with the power of perceiving.

Percurrent: running through the entire length.

Pereion: the prothorax.

Pereipoda: the second and third pair of thoracic legs of larvae, and the 2d pair in adults.

Perfoliate: divided into leaf-like plates: applied to antennae with disc-like expansions connected by a stalk passing nearly through their centres: also to any part possessing a well-developed leaf-like or plate-like expansion.

Pergamenous: thin, partly transparent: resembling parchment.

Peri-: round about. Periopticon: a complex nerve structure back of the basilar membrane of the eye.

Pericardial: around, or belonging to the heart.

Pericardial cavity: the space between the diaphragm and dorsal body wall, which contains the heart.

Pericardial cells: specialized cells, which lie along both sides of the heart, and whose function it is to purify the blood.

Pericardial chamber: is the open space around the heart or dorsal vessel.

Pericardial diaphragm: a delicate membranous tissue attached to the ventral surface of the heart and laterally to the body wall := dorsal diaphragm wings of the heart.

Peri-intestinal: that part of the body cavity around the alimentary canal.

Peri-neural: situated around a nerve: the body cavity immediately surrounding the nervous system.

Periodical: recurring at regular intervals.

Periopticon: third ganglionic swelling of optic tract: see opticon.

Peripheral: referring to the outer margin.

Peripheria: the entire outline of the body.

Periphery: the circumference or outer margin.

Peripneustic: larvae which have the spiracles absent on middle and posterior thoracic rings, and present on all other body segments.

Peripodal cavities: pouches in the embryo in which the rudiments of the future legs and wings are developed.

Peripodal membrane: the cell layer surrounding the peripodal cavities. Peristaltic: that periodic motion of the alimentary canal by means of which the food is forced toward the anal extremity.

Peristethium: the meso-sternum.

Peristoma -ium: the border of the mouth or oral margin in Diptera; sometimes used as := epistoma: q.v.

Peristome: a membranous tissue surrounding the mouth parts at base, and forming the true ventral wall of the head.

Peritoneal: applied to the membrane surrounding the viscera, trachea, and other internal structures.

Peritracheal: surrounding the trachea.

Peritreme: the corneous selerite surrounding a spiracle.

Peritrophic membrane: a funnel-like extension of the fore-gut, extending back tube-like, through the chylific ventricle in some insects.

Perivisceral: the cavity containing the alimentary canal and its appendages.

Perlate: beaded: bearing relieved, rounded points in series.

Perpendicular: upright: at right angles to horizontal.

Persicinus: the red of peach blossoms.

Persistent: remaining constantly; always present.

Personate: gaping wide open; masked; disguised.

Pes, Pedes: a foot feet.

Petiolar area or Petiolarea: on the metanotum of some Hymenoptera, the apical or hindmost of the three median cells 3d median area; apical area.

Petiolate: that series of Hymenoptera in which there is a slender stalk between the thorax and abdomen: = apocrita.

Petiolate: supported or placed on a stem or stalk; usually applied in describing venation and the method of attachment of abdomen to thorax.

Petiole: a stem or stalk: specifically the slender segment between the thorax and abdomen in many Hymenoptera, and some Diptera.

Phaeism: applied to a duskiness of butterflies occurring in a limited region.

Phagocyte: a corpuscle or cell that devours or absorbs noxious organisms and also absorbs the organs of the larval stage in the developments to the adult condition.

Phagocytosis: the destruction or devouring of bacteria or other microorganisms by phagocytes.

Phalaenae: a Linnean term embracing most of the heterocerous Lepidoptera: more specifically applied to the Geometridae.

Phalanx -ges: a joint or joints of the tarsus: a division of classification of uncertain value: similar to tribe.

Phalerated: beaded.

Phallus: =penis: q.v.

Pharyngeal pump: = sucking pump; q.v.

Pharynx: the back part of the mouth and upper part of the throat: a slight enlargement at the beginning of the oesophagus: in Diptera is sometimes restricted to the space between the hypopharynx and sub-clypeal pump, and is then = sub-clypeal tube.

Phauloptera: an ordinal term for the scale insects (Laporte 1835).

Phleboptera: = Hymenoptera; q.v.

Phonetic: sound producing; applied to stridulating structures.

Phosphorescent: shining or glowing in the dark, like phosphorus.

Photogenic: a light producing structure; producing a Phosphorescent glow.

Phragma: a partition or dividing membrane: longitudinal, thin partitions passing down from the dorsum of meso- and meta-thorax: the partition formed by the inflexed hinder edge of prothorax.

Phragmocyttares: social wasps in which the combs of the nest are wholly or partly supported by the covering envelope: see stelocyttares: poecilocyttares.

Phthiriasis: a diseased condition of the skin caused by sucking lice.

Phyllophagous: feeding upon leaf tissue.

Phylogenetic: relating to tribal or stem development.

Phylogeny: the development of a genus, family, tribe or class: see ontogeny.

Phyloptera: the super-ordinal term proposed to include all the net-veined orders, the Orthoptera and Dermatoptera.

Phylum: a stem or tribe: used in classification to indicate a series of related organisms.

Physopoda: bladder-footed: = Thysanoptera; q.v.

Phytophaga: plant-eaters: beetles in which the 4th and 5th tarsal joints are anchylosed and the 3d is lobed.

Phytophagus: feeding upon plants.

Phytophilous: plant loving: species that live on plants.

Phytophthira: plant lice: some authors include also scale insects.

Phytoscopic: characters of light or conditions of illumination that affect colors of caterpillars. {Scanner's comment: This is a puzzling term. I suspect it is a misspelling of "Photoscopic"}

Piceous -eus: pitchy black.

Picine: black, with a bluish oily lustre.

Pick: a chitinous maxillary structure in Psocidae.

Pieza: the combined biting and sucking mouth of the Hymenoptera.

Piezata: the Fabrician term for Hymenoptera.

Pigment: any coloring matter or material that gives a color appearance. {Scanner's comment: sic}

Pile: a hairy or fur-like covering: in Diptera, applied to thick, fine, short, erect hair, giving a surface appearance like velvet.

Pilifer or Piliger: a small sclerite at each side of the clypeus in Lepidoptera, resembling a rudimentary mandible.

Piliferous: with a covering of fine hair or pile.

Pillared eye: in Ephemerids, that type which is placed on a cylindrical stalk or process: = turbinate eye.

Pilous or Pilose: clothed with down, or dense pile: with long, sparse hair.

Pilosity: a covering of fine, long hair.

Pincers: the anal forceps.

Pinna: a narrow wing; a feather.

Pinnae: of posterior femur in jumping Orthoptera, are the oblique ridges running to the median line and somewhat resembling a feather.

Pinnate: feather-like; cleft, like the wings of Alucita: with markings resembling a feather: with stiff hairs or thorny processes occupying opposite sides of a thin shank.

Pinnatifid: divided into feathers, as when wings are cleft nearly to the base.

Pistazinus: yellowish green, with a slight brownish tinge [pale green with a little burnt sienna].

Plaga: a spot, stripe or streak of color; a longitudinal spot of irregular form.

Plaited: longitudinally folded or laid in pleats.

Planate: with a flattened surface.

Plane: level, flat; applied to a surface.

Planipennia: applied to Neuroptera in which the wings are large and laid flat on the body wnen at rest; Sialidae, Myrmeleonidae, etc.

Planta -ae: the basal joint of the posterior tarsus in pollen gathering Hymenoptera: the soles of the posterior tarsal joints: the anal clasping legs of caterpillars.

Plantigrade: species that walk on the entire foot, not on the claws alone.

Plantula: a lobe of the divided tarsal pulvillus; one of the soles or climbing cushions of the foot: see arolium; pulviglus.

Plaques: the small leathery hemelytra in some Naucorids.

Plasma: the liquid portion of animal fluids and cells.

Plasticity: the capacity for being formed, moulded or developed.

Plate: any broad flattened piece or sclerite: = squame, in Coccidae.

Platelet: a little plate or sclerite of chitin in a membrane.

Plates: in Coccidae, the squames; q.v.: in male Homoptera, a pair of pieces following the last full ventral segment; usually preceded by a short piece, - the valve.

Platyptera: flat and broad-winged: an ordinal term applied to insects with four net-veined wings, secondaries longitudinally folded beneath primaries; mouth mandibulate; prothorax free; transformations complete: Psocidae, Termitidae, Perlidae and Mallophaga. {Scanner's comment: These four groups are now placed in totally separate orders, and not families as these names imply}

Plecoptera or Plectoptera: plaited winged: an ordinal term applied to net-veined insects in which the secondaries are longitudinally folded beneath primaries; mouth mandibulate; body loosely jointed; prothorax free; metamorphosis incomplete: the term Plecoptera was used by Brauer for Perlidae; Plectoptera by Packard for the Ephemerida: there has been some confusion since, and both have been used in the Brauer sense.

Pleon: = abdomen; q.v.

Pleopoda: abdominal legs of larva: posterior legs of an adult.

Plesiobiosis: see symbiosis.

Plesiotype: any specimen identified with a described or named species by a person other than the describer.

Pleura: plural of pleuron or pleurum: the lateral sclerites between the dorsal and sternal portion of the thorax: in general, the sides of the body between the dorsum and sternum.

Pleural areas: on the metanotum of some Hymenoptera, the three spaces between the lateral and pleural carinae; the 1st or anterior = spiracular area; the 2d or central = middle pleural; the 3d or posterior = angular area.

Pleural carinae: in Hymenoptera, extend along the exterior margin of the metanotum.

Pleural pieces: the lateral sclerites of the thorax; see pleura.

Pleurites: the sclerites into which the pleurum is divided.

Pleuron: the side of the thorax.

Pleuropodia: embryonic or temporary bands formed by the modified first pair of abdominal legs in many insects.

Pleurostict: lamellicorn beetles in which the abdominal spiracles are situated on the dorsal portion of the ventral sclerites.

Pleurum: = pleuron; plural, pleura; q.v.

Plexus: a knot: applied to a knot-like mass of nerves, or tracheae.

Plica: a fold or wrinkle: a longitudinal plait of a wing.

Plicate: plaited; folded like a fan.

Plications: folding,; applied to the folds on the hind wings of Orthoptera.

Plicipenna: = Trichoptera; proposed by Latreille.

Plumate: like a feather.

Plumbeus: leaden or bluish gray [neutral].

Plumose: feathered; like a plume: antennae that have long ciliated processes on each side of each joint: see cirrate.

Plump: with full, rounded outlines; not obese.

Plumules: specialized scales of the androconia of male Lepidoptera.

Pluri: as a prefix, means many.

Pluri-dentate: with many teeth.

Pluri-setose: bearing several seta; as the head in some Carabids.

Pluri-valve: with several valves or valve-like appendages.

Pneumogastric: the ganglion supplying nerves for the tracheal and digestive system: also used as = vagus: q.v.

Pneustocera: breathing horns: the prolongations of the metathoracic spiracles in Berytidae, etc.

Pnystega: in Odonata, applied by Charpentier to a portion of mesonotum

Pobrachial: a longitudinal vein of the Ephemerid wing just behind praebrachial; usually simple: number 7 of some systems.

Podeon: in Hymenoptera, the petiole: the true second abdominal segment.

Podex: the upper plate of the anal opening; = supra-anal or sur-anal plate in caterpillars.

Podical plates: the latero-ventral plates attached to the loth abdominal segment of Orthoptera; the two pieces on each side of the vent, thought by Huxley to be rudiments of an 11th abdominal ring; united they form the tergite of a rudimentary ring: = anal valves: paranal lobes.

Pododunera: apterous insects with biting mouth structures.

Podotheca: that part of pupa that covers the legs of future adult.

Poecilocyttares: social wasps that build their combs around the branch or other support covered by the envelope: see stelocyttares and phragmocyttares.

Poisers: = halteres and balancers; q.v.

Poison glands: sometimes applied to the salivary glands of bugs and biting flies; more usually to an abdominal gland connected with the sting of female Hymenoptera.

Policate: a tibia produced inwardly into a short, bent spine or thumb.

Politus: smooth, shiny, polished.

Pollen: a dusty or pruinose surface covering which is easily rubbed off; used mostly in Diptera.

Pollen-plate: a polished area margined by hair, on the outer face of the tibia in bees.

Pollex: a thumb: the stout fixed spur at inside of tip of tibia.

Pollicatus: = policate; q.v.

Polliniferous: formed for collecting pollen: pollen bearing.

Pollinigerous: = polliniferous: q.v.

Pollinose: covered with a yellow, pollen-like dust.

Poly-: many, much.

Polyandry: where a female mates with more than one male.

Polychromatic: many colored.

Polydomous: applied to ants when one colony has several nests.

Polyembryony: the production of several embryos from a single egg, as in some Chalcids.

Polygamy: where a male mates with more than one female.

Polygonal: with many angles.

Polygoneutism: the power to preduce several broods in one season.

Polymorpha: the claviform and serricorn Coleoptera, as a whole.

Polymorphic-ous: occurring in several forms; differing in sex, In season, in locality or without apparent reason: undergoing Several changes, and in this sense applied to insects with a complete metamorphosis.

Polynephria: applied to insects with many urinary (Malpighian) tubes.

Polyphagous: eating many kinds of food.

Polyphyletic: derived or descended from several stems or sources.

Polypodous: having many feet, and thus, specifically applied to the Myriapoda, and to the larvae of Lepidoptera and saw-flies, in contradistinction to footless and hexapodous larvae.

Ponderable: that which may be weighed.

Pone: behind (the middle).

Ponticulus: = frenulum; q.v.

Porcate: marked with raised longitudinal lines.

Pore: any small, round opening on the surface.

Poriferous: closely set with deep pittings or punctures.

Porose -us: with little round openings on the surface.

Porrect: stretched out forward: straightly prominent.

Post-: behind or after.

Post-alar callosities: rounded processes at the posterior lateral margin of the dorsum, in Diptera.

Post-alar callus: in Diptera, a rounded swelling between the root of the wing and the scutellum.

Post-alar membrane: the strip of membrane connecting the squamae with the scutellum.

Postal vein: in Hymenoptera, = costa (Comst.).

Post-annellus: in Hymenoptera, the 4th joint of antenna and 2d of flagellum.

Post antennal organs: in Collembola, oblong or ellipsoidal organs situated just caudad of the bases of the antenna.

Post-brachial: = pobrachial; q.v.

Post-cerebral: applied to that pair of salivary glands in bees, situated close to the posterior wall of the head.

Post-clypeus: in Odonata, the upper of the two parts into which the clypeus is divided: in Psocidae, a peculiar inflated structure behind the clypeus: in general, the posterior or upper part of clypeus when any line of demarcation exists: = supra-clypeus; nasus: afternose; paraclypeus: first clypeus; clypeus posterior.

Post-costa: = subcosta (Comst.): in Odonata, = 1st anal vein (Comst.): in Trichoptera = anal.

Post-costal space: Odonata; the cell or cells lying posterior to the post- costa = anal cell (Comst.).

Post-cubitals: = post-nodal spaces; q.v.

Post-dorsulum: the middle piece of the meta-notum, between the mesophragma and post-scutellum.

Post-embryonic -otic: the stage after the insect has come out of the egg.

Post-epistoma: that part of the head behind the clypeus in Hymenoptera: see also post-clypeus.

Posterior: hinder or hindmost: opposed to anterior: in Diptera; applied to that face of the legs which is not visible when viewed from the front, the legs being laterally extended.

Posterior angle: of thorax, in Coleoptera, is the lateral angle near base of elytra: of the wings = hind angle; anal angle; q.v.

Posterior cells: in Diptera (Will.): 1st radial 5 (Comst.): 2d = medial 1 (Comst.): 3d = 2d medial 2 (Comst.) 4th = medial 3 (Comst.): 5th cubitus 1 (Comst.).

Posterior cephalic foramen: in Odonata, the opening of head posteriorly through which the cavities of head and thorax communicate.

Posterior field: of tegmina, = anal field; q.v.

Posterior intercalary: in Diptera, is one of the anal veins (Comst.).

Posterior lateral margins: in Orthoptera, extend from base of pronotum downward to the posterior angle of sides.

Posterior lobe: of the pronotum in Orthoptera, see lobe: in Diptera, that part of wing between axillary incision and base: = alar appendage (Loew). Posterior margin: = inner margin; q.v.

Posterior pereion: the meta-notum.

Posterior pleon: the terminal segments of the abdomen.

Posterior pleopoda: the anal clasping legs of caterpillars: see planta.

Posterior stigmatal tubercle: on thoracic and abdominal segments of caterpillars; varies in position from substigmatal to stigmatal posterior; sometimes united to V: it is IV of the abdomen, II of the thorax (Dyar).

Posterior trapezoidal tubercle: on the thoracic and abdominal segments of caterpillars; subdorsal, posterior, always present, rarely united with I: it is II of the abdomen, lb of the thorax (Dyar).

Posterior veins: those separating the posterior cells.

Posterior wings: = secondaries: q.v.

Postero-dorsal: Diptera; applied to leg bristles at the meeting of the dorsal and posterior face.

Postero-ventral: Diptera; applied to leg bristles at the meeting of the ventral and posterior face.

Postfurca: an internal process of metasternum to which the muscles of hind legs are attached.

Post-gena: the sclerite below occiput and behind gena in some Orthoptera.

Post-gula: is situated at the extreme base of the underside of the head in Dermaptera.

Post-humeral bristles: in Diptera, are usually two, inserted above the dorso-pleural suture between the humeral callus and root of wing, on the bottom of the presutural depression.

Postical vein: in Diptera, = 5th longitudinal (Meig.); = media 3 (Comst.).

Posticus: hinder.

Post-media: Ephemerida; an apparently distinct vein between media and Cubitus (Comst.).

Post-medial line: in Lepidoptera, = t.p. line: q.v.

Post-median: Diptera; those leg bristles situated above or behind the middle. Post-nodal cross-veins: in Odonata, the transverse veins between costa and radius 1, and radius 1 and media 1, from nodus to stigma, separating the post-nodal cells or spaces: = post-cubital cross-veins.

Post-nodal costal spaces: in Odonata, the cells below costal margin from nodus to stigma.

Post-nodal radial spaces: in Odonata, the cells between radius 1 and media 1, from nodus to outer margin.

Post-nodal sector: in Odonata, a longitudinal vein lying between media 1 and media 2 (Comst.): = ultra-nodal sector.

Post-oral: behind the mouth; those segments bearing mouth structures.

Post-pectus: the under surface of the meta-thorax.

Post-petiole: in Hymenoptera, that part of abdomen behind petiole. Post-retinal: the fibres arising from the facets of the compound eye and extending into the ganglionic plate.

Post-scutellum: the fourth and posterior sclerite of the dorsum of the thoracic rings.

Post-sutural: in Trichoptera, the little plate behind the scutellum of mesothorax: = post-scutellum.

Poststigmatal: that portion of the marginal cell beyond the stigma in bees: = 2d radial 1 (Comst.).

Post-stigmatal primary tubercle: on thoracic segment of caterpillars; sub-primary, stigmatal, posterior; it is III of the thorax and not present on abdomen (Dyar).

Post-subterminal: following the s. t. line in Lepidoptera.

Post-sutural bristles: in Diptera, dorsal bristles behind transverse suture.

Post-terga: applied to the posterior scutes of the segments of Coleopterous larvae.

Post-triangular cells: = discoidal areolets; q.v.

Post-vertical cephalic bristles: in Diptera, are in the middle of upper part or Occiput.

Pouch: in Trichoptera, a depressed, usually longitudinal area in a wing.

Prae- or Pre-: anterior to; before.

Praebrachial: a longitudinal vein in middle of an Ephemerid wing; usually forked: no. 6 of some systems.

Praecostal spur: a false vein in costal angle at base of secondaries.

Prae-dorsum: = prophragma: q.v.

Prae-labrum: in Diptera = clypeus: q.v.

Praeocular: before the eyes.

Praeputium: the external membranous covering of penis: specifically a spherical muscular mass at base of penis in some Orthoptera.

Prae-scutellum: a sclerite, rarely present, between the meso-scutum and meso-scutellum.

Prae-scutum: the first of the four divisions of the notum of the thoracic rings.

Prae-subterminal: preceding the s.t. line in Lepidoptera. Prae-terga: the anterior thoracic scutes in coleopterous larvae.

Prae-tornal: preceding the tornus (q.v.) in Lepidoptera.

Prasinus: grass-green [apple green].

Pratinicolous: frequenting or living in grassy meadows or bogs.

Pre-alar callus: a small swelling or projection before the root of wings, just back of outer ends of transverse suture, in Diptera.

Pre-anal: above or before the anal opening.

Pre-anal plate or lamina: = supra-anal plate; q.v.

Pre-antennal: anterior to or before the antenna.

Pre-apical: before the apex.

Pre-balancer: = pre-halter: q.v.

Pre-basilar: before the base.

Precocious stages: generally applied to all stages of development from the fertilized egg to the pupa.

Precurrent: continuous: entire: complete: said of a vein.

Predaceous: applied to insects that live by preying upon other organisms.

Predatory: = predaceous: q.v.

Pre-eruciform: before the caterpillar stage: specifically applied to the early larvae of some Proctytrypidae.

Preformation: the doctrine of growth or development from already existing rudiments; opposed to epigenesis: q.v.

Pre-furca: "the stem vein in front of a fork, that reaches back to where itself forks from another vein"; Diptera.

Pregenicular: in Orthoptera, that portion of femur proximad the knee.

Pregenicular annulus: a more or less conspicuous color ring on the caudal femora proximad the knee in Orthoptera.

Pre-halter: a membranous scale in front of the true haltere of a fly.

Prehension: structures fitted for grasping or holding.

Pre-mandibular: situated in front of the mandible: applied to a temporary segment of the embryo: = intercalary segment.

Pre-media: Ephemeridae; an apparently distinct vein between radius and media (Comst.).

Premorse: as if bitten off: with a blunt or jagged termination.

Prensor: the genital lateral clasping organ of male Lepidoptera: see clasper.

Pre-ocular: see prae-ocular.

Pre-oral: in front of the mouth: the embryonic head segments before those bearing the mouth parts.

Prepuce: =praeputium; q.v.

Pre-pupal: that stage in the larva just preceding the change to pupa.

Pre-scutellar bristles: in Diptera, are in a transverse row in front of the scutellum.

Pre-scutellar callus: = post-alar callus: q.v.

Pre-scutellar rows: in Diptera, short rows of small bristles in front of the scutellum.

Press: =filator; q.v.

Pressure plate: a structure at base of pulvillus, which exerts a pressure on the sole of the pad.

Pre-sutural bristles: in Diptera, in a trigonate depression at outer ends of transverse suture, near dorso-pleural suture.

Pre-sutural inter-alar bristle: the single bristle of the interalar series, situated before the transverse suture.

Primaries: the anterior or fore-wings.

Primitive: simple in character; of an early or ancient type.

Principal sector: in Odonata, extends from its point of separation From the median sector to the outer margin, at or just below the apex:= media 1 (Comst.).

Principal sulcus: in Orthoptera, a transverse impression of the prothorax, at or behind the middle.

Priodont: applied to those forms of male Lucanids that have the smallest mandibles: see teleodont, mesodont, amphiodont.

Prismatic: formed like a prism: a play of colors similar to that produced through a prism.

Pro-: anterior: used as a prefix to designate the parts of the first thoracic segment.

Proboscidea: an ordinal term for the Coccidae.

Proboscis: generally applied to any extended mouth structure; usually applied to the extensile mouth of the Diptera; frequently to the beak of Hemiptera; sometimes to the tongue of Lepidoptera; and rarely, to the mouth of long-tongued bees.

Procephalic: relating or belonging to the procephalon.

Procephalic lobes: in the embryo, form part of the anterior, overhanging portion of the head.

Procephalon: that segment of the head in the embryo which is formed by the coalescence of the first three primitive segments.

Procerebral: that segment of the brain containing the median protocerebrum and optic ganglia; also called optic segment.

Procerebral lobes: the central portion of the cerebrum, made up of the fused median lobes, giving rise to the mushroom bodies; q.v.

Procerebrum: the anterior part of the brain, formed by the ganglion of the first primary segment; also termed ocular lobe, froth part it innervates. Process: a prolongation of the surface, margin, or an appendage: any prominent portion of the body not otherwise definable.

Process of labrum: in bees = appendicle: q.v.

Procidentia: the narrow projecting tip of 7th dorsal segment in Nematinae.

Proclinate: directed forward; applied to hair or bristles.

Proctodaeum: the invagination of epiblast that produces the anus and intestine as far forward as and including malpighian tubes.

Proculiform or Poculiform: hollow, cylindrical, with a hemispherical base, the sides at top straight goblet-shaped.

Procumbent: trailing; prostrate; lying flat.

Produced: drawn out; prolonged; extended from.

Proeminent: said of the head when it is horizontal and does not form an angle with the thorax.

Profile: the outline as seen from the side.

Profound, Profundus: deep.

Prognathus: having the jaws directed forward.

Progoneate: with the genital opening on an anterior body segment.

Progonia: the anterior angle of the secondaries.

Proleg: any process or appendage that serves the purpose of a leg: specifically the fleshy unjointed abdominal legs of caterpillars and certain saw-fly larvae: = abdominal feet: false legs.

Proloma: the anterior margin of the secondaries.

Prolonged: extended or lengthened beyond ordinary limits.

Promeros: the first abdominal segment in Lepidoptera.

Prominent: raised or produced beyond the level or margin: standing out in relief by color or otherwise: conspicuous.

Promuscidate: with proboscis or extended mouth structure.

Promuscis: an extended mouth structure: has been applied to the long tongue of bees and to the rostrate structure in Hemiptera.

Pronotal carina: in Orthoptera, the main or median carina on pronotum.

Pronotum: the upper or dorsal surface of the prothorax.

Pronucleus: the nucleus of male and female elements, spermatozoa and ova, the union of which forms the nucleus of a fertilized ovum.

Pronymph: is that stage in certain inctabolous insects in which the larval tissues are completely broken down, and the imaginal tissues are just beginning to build up.

Proparaptera: the paraptera of the prothorax: the terms erroneously applied in this connection.

Propedes: = prolegs: q.v.

Prophragma: the anterior dividing wall of meso-thorax, which is horny and, at its upper edge, bears the connecting membrane between pro- and mesothorax.

Prop-leg: = pro-leg; q.v.

Propleura: the lateral portions of prothorax.

Propleural bristles: in Diptera, are situated immediately above the front coxa: = prothoracic bristle; q.v.

Propneustic: larval forms in which only the most anterior spiracles occur.

Propodeon: = propodeum.

Propodeum: in Hymenoptera, that part of thorax just above insertion of abdomen, and really the first abdominal segment: see median segment.

Propolis: a glue or resin-like product elaborated by bees to serve as a cement in cases where wax is not sufficiently tenacious.

Propulsatory: that which drives onward or forward.

Propupa: a semi-pupa: q.v.

Propygidium: the dorsal segment or tergite in front of the pygidilini, sometimes left exposed in Coleoptera.

Propygium: = Hypopygium: q.v.

Proscutum: the scutum of the pronotum.

Proscutellum: the scutellum of the pronotum.

Prostemmatic: = ante-ocular; q.v.

Prosternal: belonging to the prosternum.

Prosternal grooves: occur laterally in some Coleoptera. e.g. Elateridae, to receive the antennae.

Prosternal epimera: the epimera of prothorax.

Prosternal episterna: the episterna of prothorax.

Prosternal lobe: in some Coleoptera, an anterior prolongation of the prosternum which more or less conceals the mouth from below.

Prosternal spine: the curved mucro in Elateridae which extends backward into a meso-sternal cavity: the cone or tubercle between fore-legs in some Orthoptera.

Prosternal suture: that suture of pro-thorax which separates the sternum front the pleural pieces.

Prosternellum: the sternellum of the prothorax

Prosternum: the fore-breast: the sclerite between the fore-legs.

Prostheca: a mandibular sclerite set with hair, articulated to the basalis - q.v. -and equal to the lacinia of the maxilla.

Protamphibion: a name applied by P. Mayer to the hypothetical common ancestor of the Perlina, Ephemerina and Odonata.

Protandry: the appearance of males earlier in the season than females.

Protarsus: the tarsus of the anterior leg.

Proteiform: having many fortes or varieties: protean.

Protergum: in Odonata, the upper surface of prothorax.

Proterotypes: primary types, including all the material upon which the original description is based.

Prothoracic bristle: in Diptera, a strong bristle immediately above the front coxa: see propleural bristles.

Prothoracic glands: occur in Orthoptera, on the sides of prothorax in certain Phasmid genera.

Prothoracic shield: = cervical shield: q.v.

Prothoracotheca: the pupal covering of prothorax.

Pro-thorax: the first thoracic ring or segment: hears the anterior legs but no wings: when free, as in Coleoptera. is usually referred to as "thorax" merely.

Protocerebral segment: = ocular seginent; q.v.

Protocerebrum: the primitive anterior cerebral vesicle.

Protocosta: the thickened costal margin of Lepidopterous wings.

Protocranium: the posterior part of the epicranium: sometimes used as Occiput.

Protogonia: the apical angle of the primaries.

Protograph: all original description by a figure or picture made from the original type.

Proto-lepidoptera: proposed for those forms (Eriocephalidae) in which lacinia and mandibles are obvious and the spiral tongue is not developed: see neolepidoptera and paleolepidoptera.

Protolog: the original description by words.

Protoloma: the anterior margin of primaries.

Protomesal: applied to certain areolets in Hymenoptera, situated between costal cells and apical margin.

Prototergite: the foremost dorsal segment of abdomen.

Preto-thorax: = prothorax: q.v.

Prototype: a primitive form to which later forms can be traced.

Protractor: that which extends or lengthens out: applied to muscles.

Protuberance: any elevation above the surface.

Protuberant: rising or produced above the surface or general level.

Proventriculus: the posterior portion of crop: the gizzard.

Proximad: toward the proximal end.

Proximal: that part of an appendage nearest the body: see distal.

Prozona: in Orthoptera, the upper or dorsal surface of prothorax in front of the principal sulcus.

Pruinose: hoary: as if covered with a fine frost or dust.

Pruinous -us: deep blue with a reddish tinge, like a plum [French blue + purple lake].

Psammophilous: living in sandy places.

Pselaphotheca: that part of the pupa which covers the palpi.

Pseudidolum: = nymph: q.v.

Pseudimago: = sub-imago; q.v. Pseud- or Pseudo-: as a prefix means false, spurious, or merely resembling. Pseudo-cellula: = accessory cell: q.v.

Pseudo-chrysalis: the semi-pupa.

Pseudo-coel: a false hollow; a hollow which does not form a tube.

Pseudo-cone: a soft, gelatinous cone in the compound eye of some insects, replacing the crystalline cone of others.

Pseudo-elytra: the aborted anterior wings of Strepsiptera.

Pseudogyna fundatrix: in Aphids, is the immediate issue of a fecundated egg: a stem-mother.

Pseudogyna gemmans: in Aphids. are wingless descendants of the stem-mother (fundatrix) or of the winged migrants (migrans) which reproduce asexually through a number of generations.

Pseudogyna migrans: in Aphids, the winged descendants of the stem- mother (fundatrix) through which the species is spread.

Pseudogyna pupifera: in Aphids, the last generation of p. gemmans, which produces the true sexes.

Pseudogyna: a female that reproduces without impregnation.

Pseudo-halteres: the rudimentary primaries of Stylops.

Pseudo-neurium: a false vein formed by a chitinous thickening of a wing fold.

Pseudo-neuroptera: those net-winged insects with incomplete metamorphosis: includes the present Ephemeroptera, Odonata, Plecoptera, Isoptera and Corrodentia: = Archiptera.

Pseudonychium -ia: = paronychia; q.v.

Pseudo-nymph: = semipupa; q.v.

Pseudopodia: = parapodia; q.v.

Pseudoptera: an ordinal name for the scale insects (Amyot 1847)

Pseudo-pupa: the inactive larval stage preceding the formation of the true pupa in some insccts; e.g. Meloidae: = semi-pupa; q.v.

Pseudo-pupillae: in Odonata, the black spots seen on the compound eyes of the living insects.

Pseudosessile: those petiolate Hymenoptera, in which the abdomen is so close to the thorax as to seem sessile.

Pseudo-trachea: the ringed and ridged grooves on the labella of Diptera, by means of which they scrape their food.

Pseudova: egg-like germ cells capable of development without fertilization e.g. in certain plant lice.

Pseudovary: the organ or mass of germ cells of an agamic insect.

Pseudo-vitellus: a cellular organ in Aphididae, supposed to replace the absent Malpighian tubules.

Psocoptera: = Corrodentia; q.v.

Psychogenesis: the origin and development of social and other instincts and habits. Pterodicera: with wings and two antenna.

Pterogostia: the wing veins.

Pterogostia: referring to the wing structure. Pteropega: wing sockets or cavities into which the wings are inserted.

Pteropleura: in Diptera, are situated below the base of the wings behind the meso-pleural suture: = the posterior lateral plate of meso- thorax of Lowne; the episternum of meso-thorax of Hammond.

Pteropleural bristles: in Diptera, are inserted on the pteropleura.

Pterostigma: a thickened, opaque spot on the costal margin of a wing, near its middle or at end of the radius: = bathmis, and see stigma.

Pterotheca: that part of the pupa that covers the wings.

Pterothorax: the wing-hearing thoracic segments in Thysanoptera.

Pterygium: a lateral expansion of the snout of some Coleoptera.

Pterygodes: the patagia or tegtila: q.v.

Pterygogenea: insects that are winged in the adult stage or believed to be descended from winged ancestors: see apterogogenea.

Pterygostium: a wing vein.

Pterygote: wing bearing.

Ptilinum: in Diptera cyclorrhapha, an inflatable organ capable of being thrust out through a frontal suture just above the root of antenna.

Ptilota: winged insects.

Pubes or Pubescence: short, fine, soft, erect hair or down.

Pubescent: downy: clothed with soft, short, fine, closely set hair.

Pubis: the lateral region of the prothorax.

Pulmonarium: the membranous connection of the plates or scutes of the abdominal rings: = connexivum.

Pulsatile: having the power of pulsating or moving in a rhythmic manner: applied to special organs in the legs, which aid in circulating the blood in these appendages.

Pulverulent: powdery or dusty in appearance.

Pulvilliform: having the appearance or structure of a pulvillus.

Pulvillus -i: soft, pad-like structures between tarsal claws: the cushions of short, stiff hair or other clothing on the underside of tarsal joints; rarely fleshy lobes: see arolium.

Pulvinatus: moderately convex.

Punctate: set with impressed points or punctures.

Punctiformis: shaped like a point or dot.

Punctulatus: with small punctures.

Puncture: an impression like that made by a needle.

Punctured: marked with small, impressed dots.

Puniceus: carmine red [carmine].

Pupa: the intermediate stage between larva and adult; loosely applied for all orders, properly only for those with a complete metamorphosis: a pupa is obtect, when inclosed in a rigid case on which the members may or may not be outlined. It is liber, or free when the appendages are separately encased and there is no covering over the whole: see chrysalis.

Puparium -ia: in Diptera, the thickened larval skin within which the pupa is formed.

Pupate, Pupation: to become a pupa: the act of becoming a pupa.

Pupiferous: applied to that generation of plant lice which produces sexed individuals.

Pupigenous: =pupiparous; q.v.

Pupigerous: forming a larval pupariuni: coarctate: said of dipterous larva that contract to form an envelope for the inclosed pupa.

Pupil: the central mark of an ocellate spot.

Pupillate: spots or marks that have an eye-like centre.

Pupipara: a series of Diptera, in which the females do not extrude the young until they have reached the stage ready to pupate.

Pupiparous: bringing forth young ready to pupate.

Pupivorous: feeding upon pupa: especially applied to those Hymenoptera that are parasitic upon insects in the pupal stage.

Purpurascent: becoming purple in shade.

Purpureous -eus: purple [mauve].

Pustular a colored point of moderate circumference.

Pustulated hair: in Mallophaga those arising from unchitinized spaces.

Pygidium: the last dorsal segment of abdomen left exposed by the elytra: in Forficulidw, the last dorsal segment: in Diaspincr, the compound terminal segment.

Pygofer: the last segment of the abdomen in certain Homoptera, especially the lateral margins which appear in the ventral view; hence sometimes used in the plural - pygofers.

Pygophore: the large upper piece of the genitalia in Homoptera.

Pygotheca: the parts containing the genitalia in Homoptera.

Pyloric: referring to the posterior extremity of the chylific ventricle.

Pyloric valve: the specialized posterior portion of crop where there is no distinct gizzard.

Pyloric valvule: a circular projection of the stomach behind which is an enlargement of the intestine.

Pylorus: the chylific ventricle.

Pyriform: shaped like a pear.

Q

Quadra -ri -ro: as a prefix, means four.

Quadrate: square or nearly so.

Quadrifarium: having four rows.

Quadrilateral: four-sided: formed or bounded by four lines: in Odonata, a space on the wings of Zygoptera bounded by the lower sector of arculus, the sub-median vein, a cross-vein between these two, and the lower part of arculus.

Queen: the actively reproducing female among worker insects.

Quiescent: not active: applied to the pupae in forms with complete metamorphosis.

Quiet: subdued: not conspicuous or contrasting in color or maculation.

R

Race: a variety of a species possessing constant characters which yet are not specific; usually occurring in a different faunal region from the type and may thus be geographical: nearly synonymous with subspecies.

Racemose: like a bunch of grapes: applied to ovaries when they form bunches or sacs.

Rachis: a ridge or keel dividing the spinning canal at base, in caterpillars; the shank of an antennal joint into which the lateral spines or other processes are inserted.

Radial: pertaining to the radius or radial vein.

Radial area: in Orthoptera; the space between the mediastinal (subcosta) and radial veins: see scapular area.

Radial cells: the wing area between the radius and media; often divided: in the plural (Comst.), are those cells anteriorly margined by the radius or its branches.

Radial cross vein: (Comst.), is that which divides cell, radius 1.

Radial sector: in general, the lower of the two primary divisions of the radius (Comst.): in Odonata, an indirect branch from the media, just below and parallel with media 2.

Radial vein: in Homoptera, the first important vein next the costa between it and ulnar: in Orthoptera, = radius (Comst.): in Diptera, = 2d longitudinal vein (Meigen), = radius 2 (Comst.).

Radiate veins: the longitudinal veins spreading fan-like in the anal field of secondaries: = anal veins; q.v.

Radiated: marked with lines proceeding from a common centre.

Radicle or Radicula: that joint of the antenna that is articulated to the head.

Radio-medial cross vein: connects the radial and medial systems and usually closes the radial cell (Comst.).

Radius: (Comst.); the third of the longitudinal veins starting from base and dividing into not more than five branches before reaching the margin: the branches are numbered 1, 2, 3, 4, and 5, respectively, beginning at the costal margin and extending outward and downward.

Radix: base of wings, and their point of insertion; see pteropega.

Rami -us: branches: a branch.

Ramification: the branching out in every direction.

Ramify: to branch out in every direction.

Rammel-kammer: = copulation chamber; q.v.

Ramose -ous: branched, or having long branches.

Rapacious: predatory; capturing and eating prey.

Raptatory: = raptorial; q.v.

Raptoria: applied to that series of Orthoptera, in which the anterior legs are fitted for grasping; Mantidae {Scanner's comment: No longer Orthoptera, but Mantodea, a suborder of the Dictyoptera.}

Raptorial: formed for seizing prey.

Rare: seldom seen or found.

Rasorial: formed for scratching; applied to leg structures.

Ravenous: greedy; voracious; hungrily.

Receptaculum seminis: a sac or pouch-like appendage at the junction of the oviducts with the vagina; it is filled during copulation and the eggs are fertilized from it as they are extruded.

Reclinate: directed backward; e.g. the bristles in Diptera.

Reclinatus: = reflexed; q.v.

Reclivate: curved into a convex, then into a concave line.

Recondite: the sting when concealed in the abdomen.

Rectal cauda: the terminal, tubular process or tail terminating the abdomen of some male Hemiptera.

Rectal glands: appendages to or thickenings of the rectum secreting a lubricating material.

Rectal tracheal gills: lamelliform structures in the rectum of the nymphs of some Odonata, supplied with trachea and tracheoles and serving as respiratory organs.

Rectangular: in the form of a right or rectangle.

Rectangulate: forming or meeting in a right angle.

Rectigrade: larvae which, having sixteen feet, walk with a rectilinear body.

Rectilinear: in the form of a straight line.

Rectum: a chamber, variable in size and form, just within the anus, in which the excretions are formed or molded for expulsion from the body:= cloaca.

Rectus: right or straight.

Recumbent: lying down; reclining.

Recurrent: running backward: applied to nerves it = stomatogastric.

Recurrent nervure: in Hymenoptera (Nort.), is the medial cross vein (Comst.), from the point of branching to the junction.

Recurrent vein: in Hemerobiidae, the first branch of the subcosta when it recurves toward the base of the wing.

Recurved: bowed backward.

Reductus: a zig-zag marking or corrugation.

Reflected or Reflexed: angularly bent backward.

Refracted: bent back as if broken.

Region: a space or area adjoining a specified point: a part of the body composed of a number of segments, as the head, the thorax, or the abdomen.

Rejuvenescence: a renewal of youth; bringing back to a condition of youth.

Remote: further removed than distant.

Reniform: kidney-shaped: applied to a macula approximating that shape, found at the end of median cell in many moths.

Repand: wavy; with alternate segments of circles and intervening angles.

Replicate: wings folded back upon the base; like the secondaries in Coleoptera.

Replicatile: capable of being folded back.

Repugnatorial: serving to repel: so offensive as to drive away: applied to glands that secrete an offensive material.

Reservoir: a case or cavity for the storage of any fluid or secretion.

Resilient: elastic; having the property of springing back.

Respiration: breathing or taking breath: union of oxygen with tissues and liberation of carbon dioxide from same.

Restricted: held back: confined to a limited area.

Resupinate: upside down; horizontally reversed.

Rete: the fatty mass of insects: also applied generally to any structureless membrane or layer.

Reticulate: like net-work.

Reticulum: a net-work; as of a cell.

Retina: that portion of the eye upon which the image is formed.

Retinaculum: in Lepidoptera, the loop into which the frenulum of the male is fitted; = hamus, q.v.: in Hymenoptera, horny, movable scales serving to move the sting or to prevent its being darted out too far: in Coleoptera, the middle, tooth-like process of the larval mandible.

Retinal pigment: the pigment layer of the compound eye just above the basilar or fenestrate membrane.

Retinophora: = retinula; q.v.

Retinula -ae: the retina of a single ocellus: the nerve fibres or cells between pigment cells and retina of the compound eye.

Retracted: drawn back; opposed to prominent.

Retractile: capable of being drawn in or retracted.

Retractor: used in drawing in or back; as a muscle.

Retroarcuate: curved backwards.

Retrocession: the going or moving backward.

Retrose: (sinuate), pointing backwards; (serrate) inversely serrated.

Retuse: ending in an obtuse sinus or broad, shallow notch, terminated by an obtuse hollow.

Reversed: turned in, an unusual or contrary direction, as upside down or inside out: said of wings when they are deflexed, the margin of secondaries projecting beyond those of primaries.

Reviviscence: coming back to life; awakening from hibernation.

Revolute: spirally rolled backward.

Rhabdites: the blade-like elements of the sting and ovipositor: a rod or bladelike process projecting from the epidermis.

Rhabdom: the rod lying in the axis of the retinula, below the crystalline cone of an eye.

Rhabdomere: the rod-like distal portion of a retinular cell.

Rhabdopoda: clasping organs of the 9th abdominal segment of male.

Rhinarium: a nostril piece or portion of the nasus: q.v.: in Odonata, the lower portion of clypeus = ante-clypeus; q.v.

Rhipiptera: = Strepsiptera q.v.

Rhomboidal: having the form of a rhomb.

Rhombus: a quadrangular figure having its four sides equal and its opposite lines parallel, with two opposite angles acute and two obtuse.

Rhopalocera: that series of Lepidoptera in which the antenna are alike in both sexes and form a club at tip.

Rhodoptera: apterous insects with sucking mouth structures.

Rhophoteira: an ordinal term for the fleas (Clairville).

Rhynchophora: that section of Coleoptera, in which the head is produced into a snout, at the end of which the mouth structures are situated; gular sutures confluent: prosternal sutures wanting: the weevils.

Rhynchota: = Rhyngota: q.v.

Rhynchus: of Fabricius, = promuscis: q.v.

Rhyngota: insects in which the mouth parts are prolonged into a beak or rostrum which serves as a protection to the piercing lancets: Hemiptera in the broad sense.

Rhythmical: occurring at regular intervals in the production of opposite conditions.

Rigid: inflexible: holding a direct course.

Rima: a crack or longitudinal opening with sharp edges.

Rimose: full of cracks.

Ring: a circle or annulus, usually margining a discolored spot.

Ringent: gaping.

Riparian: along the river or along shore.

Ripicolous: dwelling on river banks: riparian.

Rorulentum: dusty: =pulverulent: q.v.

Roseate-eous,-ens: rose colored: pale blood red [rose].

Rosette-shaped: in the form of a double rose: clustered round a centre.

Rostellum: a small beak; applied to the mouth parts of sucking lice: also used in Hemiptera, as = rostrum; q.v.

Rostral: pertaining or attached to a rostrum; specifically of Hemiptera.

Rostrate: the head, when it has a long protraction bearing the mouth parts.

Rostriform: produced like a beak or snout.

Rostrum: a snout-like prolongation of the head: in Coleoptera, applied to the rigid extension in the snout beetles: in Hemiptera, is the jointed beak covering the piercing lancets; and this is the better use of the term.

Rotate: wheel-shaped.

Rotator: used for turning; applied to muscles.

Rotatory: an articulation that permits a rotating motion, e.g. a ball and socket joint.

Rotula: a small round segment sometimes present between the joints of antenna; and palpi: = torquillus.

Rotule: the trochantine.

Rotundate: rounded: in the form of a circle or segment of a circle: without angles: said of margins when they pass gradually into each other and do not form an angle at their point of junction.

Royal jelly: the food supplied to bee larva that develop into queens.

Royal pairs or Royalties: the sexually active males and females of social insects.

Ruben: red, approaching carmine [alizar crimson].

Rubescent: reddish or becoming red.

Rubiginose: a rusty red [dragon's blood, but brighter].

Rubinous: ruby red: like the eye of a house fly.

Rudiment -any: the beginning of any structure or part before it has developed.

Rufescent: reddish.

Rufous: brick-red [chronic yellow + dragon's blood].

Ruga, Rugulae: a wrinkle; small wrinkles.

Rugose -ous: wrinkled: with irregular waved elevated lines.

Rugulose -ous; minutely wrinkled.

Runcinate: notched: cut into several transverse acute segments which point backward.

Ruptor ovi: = egg burster; q.v.

Rutilous: a shining bronze red.

S

Sabulose: sandy or gritty.

Sac: in Coccidae, the separate cottony envelope secreted by many species.

Saccate: gibbous or inflated toward one end.

Saccule: a little sac or pouch.

Saccus: a lobe of ventral plate of 9th segment in female Lepidoptera.

Saddle: the chitinous plate on the anal siphon of Culicid larvae.

Sagitta: arrow-like spots on the wings of Lepidoptera and other insects.

Sagittae: the inner pair of forceps in male genitalia of aculeate Hymenoptera: see stipites.

Sagittal: equivalent to longitudinal.

Sagittal plane: the longitudinal vertical plane which divides an animal into right and left halves.

Sagittate: shaped like an arrow head: elongate triangular.

Salient: projecting; jutting out.

Saliva: the secretion of the salivary glands that moistens and begins the digestion of the food.

Salivary glands: glands that open into the mouth or at the beginning of the alimentary canal, secreting a digestive, irritant or viscid material.

Salivary receptacle: a small cavity above the opening of the salivary duct, between labium and hypopharynx.

Salivary pump: applied to the chitinous, cup-like structure at the base of the labial stylets of piercing Diptera; e.g. mosquitoes.

Saltatoria: that series of Orthoptera in which the posterior legs are formed for jumping.

Saltatorial or Saltatory: formed for jumping or leaping: a posterior femur when much enlarged and dilated.

Saltatory appendage: in Collembola = furcula; q.v.

Sanguineous -eus: red like arterial blood [crimson lake].

Sanguinolent: bloody; in color or appearance.

Sapphyrinus: sapphire blue [French blue].

Sarcolemma: the elastic covering of the striated muscular fibres.

Sarothrum: the basal joint of posterior tarsus in pollen gatherers: see metatarsus.

Saturate: deeply or strongly marked; in a color, means intense.

Saxicolous: species that frequent rocky or stony areas.

Saws: the ovipositors of the saw flies or Tenthredinidae.

Scaber: uneven, rough.

Scabriculous: regularly and finely wrinkled.

Scabrose -ous: rough like a file, with small raised points.

Scalariform: ladder-like; applied to venation when the veinlets between two longitudinal veins are regularly arranged like the rungs of a ladder.

Scale: a general term to distinguish Coccidae: specifically the puparium of a Diaspid, comprising exuviae and excreted matter: the waxy covering of a male Lecaniid: in Diptera = alula: q.v.

Scales: broad flattened hairs, forming the wing vestiture of Lepidoptera, and present in various other insects.

Scalloped: an edge marked by segments of circles without intervening angles.

Scalpellus: a lancet-like piercing structure, as in some Diptera.

Scalpriform: chisel-shaped.

Scansorial: said of feet, when formed for climbing on hair.

Scape: the long basal joint of a geniculate antenna in Coleoptera; usually applied to the three basal joints, as in Hymenoptera.

Scaphiform: boat-shaped.

Scaphium: a ventral process of the 10th abdominal segment in male Lepidoptera below the uncus.

Scapula: in Lepidoptera the shoulder tippets, patagia or axillae; q.v.: in Hymenoptera, the side pieces of the mesonotum; also, a trochanter of the fore-leg; in Proctotrupidae the lateral lobes on each side of the parapsidal furrow.

Scapulae: in Hemiptera, the inferior lateral face of mesonotum.

Scapular: the episternum; q.v.: applied to the scapula.

Scapular area: in a wing, is that portion nearest the shoulder: in Orthoptera, = radial area.

Scapularia: a meso-episternum: see scapula.

Scapular vein: in Orthoptera, = radius.

Scapus: = scape.

Scarabidoid: applied to that stage of a meloid larva in which it resembles a white grub or Scarabid larva.

Scarified: a surface with irregular depressions, as if clawed or scratched.

Scariose -ous: dry and scaly.

Scatophagous: feeding upon dung or excrement:= merdivorous.

Scent glands, or organs: glandular structures; sometimes eversible, sometimes in the form of hair tufts or pencils for diffusing odors that may be repellant or attractive; most frequently found in males as a secondary sexual character.

Scent pores: = ostioles; q.v.

Sclerite: any piece of the body wall bounded by sutures.

Scopa: a brush: a covering of short, stiff hair of equal length: in Hymenoptera, the thick hair covering the posterior tibia of pollen- gathering forms.

Scopate: furnished with a scopa.

Scopula: a small, dense tuft of hair: the bristles or stiff hairs covering the inner side of basal joint on the tarsi of pollen-gathering Hymenoptera.

Scopulipedes: bees which have pollen gathering structures on the feet.

Scraper: the hardened portion of the inner margin of the tegmina in crickets used in producing the song.

Scriptus: lettered or marked with characters resembling letters.

Scrobes: grooves formed for the reception or concealment of an appendage specifically, in Rhynchophora, grooves at the sides of the rostrum to receive the scape of antenna 2: also applied to grooves on the sides of mandibles: in Hymenoptera, the usually circular impressions upon the frons, in which the scapes revolve: in Orthoptera, the pits in which the antenna; are situate.

Scrobiculated: having the surface covered with deep round pits.

Scrotal membrane: the envelope covering the testes in some insects.

Scrotiform: purse-shaped.

Scrotum: = scrotal membrane; q, v.

Sculpture: the markings or pattern of impression or elevation on an elytra or other body surface.

Sculptured: a surface, when marked with elevations or depressions or both, arranged in some definite manner.

Scutate-iform: shield or buckler-shaped.

Scutcheon: = scutellum; q.v.: also used by some authors (Walker) for the pronotum in Homoptera.

Scutel: = scutellum: q.v.

Scutellar angle: of elytra is next to the scutel when wing is expanded.

Scutellar bridge: in Diptera, a small ridge on either side of the scutellum, connecting it with the mesonotum.

Scutellar space: in Mantids, an area between antennae and clypeus.

Scutellate: dish- or platter-shaped.

Scutellum: the third dorsal sclerite of the meso- and meta-thorax: in Coleoptera, the triangular piece between the elytra at base and universally referred to as the scutellum: in Heteroptera, a similar sclerite between base of hemelytra: in Diptera, a sub-hemispherical. body posteriorly cut off by an impressed line from the dorsum of the meso-thorax.

Scutes: the chitinous shields or plates on the segments of larvae.

Scutiform: = scutate; q.v.

Scutum: the second dorsal sclerite of the meso- and meta-thorax.

Seal-brown: a brilliant deep red-brown: almost like, but darker than castaneous [between dragon's blood and Indian red].

Sebaceous: fatty or oily; applied to glands secreting such substances.

Sebific: oily; sebaceous; somewhat sticky.

Sebific duct: carries the excretions of the colleterial gland to the bursa copulatrix.

Second antennal segment: the third or tritocerebral segment of head.

Secondaries: the hind wings; always attached to the meta-thorax.

Secondary sexual characters: features possessed by one sex but not the other, other than the differences of the reproductive organs themselves; e.g. color, size, shape, etc.

Second clypeus: see anteclypeus.

Second costal cell: in Hymenoptera (Pack.); is the stigma.

Second inner apical: in Hymenoptera (Nort.), = media 3 (Comst), to the junction of medial cross-vein; also called sub-marginal nervure in part.

Second lateral thoracic suture: in Odonata, extends front base of secondaries to the rear of the third coxa.

Second longitudinal vein: in Diptera:= radius 2 + 3 (Comst). Second maxilla: the labium: q.v.

Second maxillary segment: the seventh or labial segment of head.

Second median area: see median area; areola.

Second submarginal nervure: Hymenoptera (Nort.), = radius 5 (Comst.).

Secretion: any matter produced by a gland: in Coccidae, specifically, the waxy, fibrous, cottony or silky substances forming the "scales."

Secretionary supplement: that part of a Diaspid scale extending beyond or around the pellicles.

Secretory: concerned in the process of secretion.

Sectores coronis: the tearing or cutting structures used by the Lepidoptera in working out of a cocoon.

Sectors: longitudinal veins in Odonata, which strike the principal veins at an angle, and usually reach the apex or hind margin: they are radial, subnodal, principal, nodal, median, short, and upper and lower of triangle: all of which see.

Secund: pointing one way: unilateral.

Securiform: triangular-compressed; like the blade of a hatchet.

Sedentary: not active: settled or remaining in one place.

Segment: a ring or division bounded by incisions or sutures: a segment of an insect or of any articulate is a transverse portion reaching entirely across the body, originally separated on the exterior by incisions or sutures from the preceding and the succeeding segments, having attached to it not more than one pair of ventral appendages, containing internally not more than one pair of nerve ganglia which supply nerves to the pair of appendages; = somite, arthromere: fusion of segments frequently obscures, as in the head: externally the walls of one segment may be composed of a number of sclerites separated from each other by secondary sutures.

Segmentate: made up of rings or segments.

Segmentation of egg: the division of the originally single celled egg into a number of coherent cells or blastomeres; = cleavage.

Segregated: detached or scattered into groups.

Segregation: a separation or placing apart.

Sejunctus: separated.

Sellate: saddle-shaped.

Sematophore: a seminal packet, composed of the seminal fluid mixed with the excretions of the accessory glands.

Sembling: = assembling; q.v.

Semen: the fluid secreted in the testes, containing the spermatozoa.

Semi-: half.

Semicircular: like the half of a circle.

Semi-complete: in metamorphosis, = incomplete; q.v.

Semicordate: half or partly heart-shaped.

Semicoronate: partly surrounded by a margin of spines, hooks or the like.

Semicoronet: a margin of spines or hooks partly surrounding a structure or process.

Semi-cylindrical: like a groove or half a cylinder.

Semi-hyaline: hyaline in part only: not altogether transparent.

Semi-looper: a caterpillar in which one or two pairs only of the abdominal legs are wanting and where in progression, only small loops are formed: see looper.

Semi-lunar: in the form of half a crescent.

Semi-lunar valve: guards the auriculo-ventricular opening of the heart.

Seminal ducts: = vasa deferentia; q.v.

Seminal vesicles: enlarged tube or pouch-like structures which serve to store the seminal fluid of the male, and in which the later stages of its development may take place.

Seminiferous: semen-secreting.

Semipupa: that stage of the larva just preceding pupation: more specifically the interpolated stage between the active larva and the true pupa, in hyper-metamorphosis.

Semi-saggitate: like the longitudinal half of an arrow head.

Semitropical or Gulf strip: is the southern part of the Austro-riparian area extends from Texas to Southern Florida, covers a narrow strip in So. Georgia and probably follows the coastal lowlands into South Carolina.

Sensim: gradually.

Sensoria: the circular openings covered by membrane, on the antenna or legs of plant lice.

Sensory: relating to or having a sense function.

Sensory pittings: deep pits or punctures through the surface, which may or may not bear pegs, bristles or seta, and may be open or covered by a membrane; serving as organs of perception for sounds or smells.

Septa, Septula: in Odonata, the triangular area of the mesonotum before the insertion of the primaries: = calli axillary.

Septum: an internal division of a body cavity.

Sequence: the order in which things follow; e.g. species or genera.

Seriatim: placed in longitudinal rows.

Sericeous: silky: clothed with very dense minute hair which gives a silky lustre.

Sericterium -ies: the silk producing gland or glands in caterpillars: the spinning structures.

Series: a group of species, genera or families, arranged to show agreement in a common character which is not of sufficient importance to warrant the next higher division.

Serific glands: are these which produce a thick, mucous-like secretion which, on hardening, forms silk.

Serosa: the outer membrane that envelops the forming embryo, the amnion and the remainder of the egg.

Serpentinous: a dirty, dark green [Hooker's green].

Serra: a saw or saw-like part.

Serrate: saw-toothed, the teeth set toward one end.

Serrato-dentate: toothed, the edges themselves saw-toothed.

Serratulate: with little teeth or serrations.

Serricornia: that series of Coleoptera in which the antenna are serrate or saw-toothed.

Serriferous: possessing a saw-like ovipositor in the female; the saw- flies.

Serrulate: with numerous little saw teeth.

Serum: the fluid in which the blood corpuscles float or are suspended.

Sesquialter or Sesquiocellus: a large ocellus including a smaller one.

Sesquitertial: occupying a fourth part.

Sessile: closely seated: the abdomen, when it is closely attached for nearly or quite its full width to the thorax.

Sessiliventres: Hymenoptera in which the abdomen is sessile.

Seta -ae: a pointed bristle or long stiff hair: slender, hair-like appendages.

Setaceous: bristle-shaped: slender, gradually tapering to a tip.

Setarious aristate: the dipterous antenna when the arista is simple.

Setiferous: = setigercus; q.v.

Setiform: in the form of a bristle or seta: when a slender short bristle arises from a thicker basal joint.

Setigenous: the hypodermal cells that give rise to setae.

Setigerous: bearing setae or bristles; e.g. punctures.

Setiparous: producing hair or sets.

Setireme: the hairy, oar-like legs of aquatic insects.

Setose -ous: bristly or set with bristles.

Setula: a small stiff bristle or seta: in Diptera, the small thorn at the end of the subcosta.

Setulose: clothed with fine seta or setulae.

Sex: as a number, six: the physical difference between male and female: usually indicated by the sign of Mars (?) for male, and Venus (?) for female; workers or undeveloped females have the sign of Venus without the cross line, or a combination of the two others.

Sexuparae: that generation of plant lice which produces the true sexes.

Shade: a cloudy, ill-defined streak or band.

Shagreened: a surface roughened with minute tooth-like projections.

Shank: = tibia; q.v.

Shard: a chitinous sheath or elytron.

Sharp: with a pointed tip or thin edge; opposed to blunt.

Sheath of penis: in Odonata, a median, hood-like piece between the hamules, under which the penis is folded when not in use.

Shin: = tibia; q.v.

Short sector: in Odonata, = media 4 (Comst.).

Shoulder: loosely applied to an obtuse angulation; more generally to the humeral angle of fore wings or elytra: the anterior angles of thorax in Lepidoptera; the angles of prothorax in Heteroptera: the lateral angles of metazona of pronotum in Orthoptera.

Sialisterium: a salivary gland.

Side: the lateral margin of the body.

Side piece: in genitalia of male Culicids the main lateral part of the clasping organ or basal segment of clasp.

Sides of thorax: in Odonata, includes the pleura of meso- and meta- thorax, less the meso-episterna.

Sienna: a brownish orange [brown ochre].

Sigmoid: shaped like the Greek letter sigma, or English S.

Signate -us: = with marks or spots; see notate.

Signature: a colored blotch of any size or shape.

Silaceous: = ochraceous.

Silk: the hardened salivary secretion of certain larvae, mainly of Lepidoptera. similar material is produced by anal glands of some larva in Neuroptera.

Silk-glands: a pair of modified salivary glands in certain larva, mostly of Lepidoptera that secrete a viscid fluid which, on contact with the air, hardens into a silken fibre.

Silvicolous: living in moist, shady woods.

Simple, Simplex: without process, armature, or appendage of any kind.

Simple eyes: = ocelli; q.v.

Sinciput: in Coleoptera; that part of the vertex between the eyes.

Sinistrad: toward the left.

Sinistral: extending to or at the left from the median line.

Sinistro-caudad: extending obliquely from the left toward the tail.

Sinistro-cephalad: extending obliquely from the left toward the head.

Sinuate: cut into sinuses; applied to lines and margins with an in and out curve.

Sinuated: winding: with the edge scooped into sinuses.

Sinuato-convex: sinuate and convex.

Sinuato-lobate: sinuate and lobed.

Sinuato-truncate: truncated, with the margin sinuate.

Sinuous: undulating; curved in and out.

Sinus: a curvilinear indentation more or less profound: an excavation as if scooped out: a curved break in an otherwise straight margin.

Siphon: a tube-like mouth organ in certain insects: the breathing tube of a Culicid larva: any tubular external process or structure.

Siphonaptera: an ordinal name for insects which are wingless: mouth formed for piercing and sucking; saltatorial; transformations complete: the fleas = Aphaniptera; q.v.

Siphonata: = Homoptera or, more specifically, plant lice and leaf hoppers.

Siphonets: see honey tubes.

Siphonophora: = Coccinellidae; the term is preoccupied in the Coelenterates.

Siphunculata: the sucking lice.

Siphunculus: the suctorial organ of a louse, contained within the tubule: in plant lice =honey tubes; q.v.

Situ (in): in its natural place or position.

Sixth longitudinal vein: in Diptera; = 1st anal vein (Comst.).

Skeleton: the hard chitinous parts which externally (exoskeleton) or internally (endoskeleton) form a protective covering, or serve as points of attachment, to muscles and other soft organs.

Skippers: a popular term for Hesperid butterflies: the dipterous larva sometimes found in cheese and other provisions.

Slaty: very dark blackish gray with a reddish tinge [neutral with a little Indian red].

Slug: in general, any larva that has a slimy viscid appearance, and the body closely applied to the food plant: more specifically, the larvae of certain saw-flies and of some Coleoptera.

S. M. interspace: sub-median interspace in the primaries of Lepidoptera, includes the space between the median and sub-median veins; (cubitus and 1st anal, Comst.).

Smaltinus: a dull grayish blue.

Smaragdinus: emerald green [pale green].

Smooth: a surface without elevations or indentations.

Snout: the prolongation of the head in Rhynchophora at the end of which the mouth parts are situated: see rostrum.

Social: living in communities: more especially those species in which undeveloped or worker forms occur and where the colony has a single female head.

Soldiers: in termites; forms sexually undeveloped, in which the mandibles are pincer-like and the head is much enlarged: worker majors in certain ants.

Solid: applied to an organ usually jointed, when these joints form into one mass; e.g. the capitulum of certain clavate antennae.

Solitary-arius: occurring singly or in pairs; not in colonies.

Somatic: relating to the body, or abdomen.

Somatotheca: that part of pupa covering abdominal rings:= gasterotheca.

Somite: = arthromere.

Sonifaction: the production of sound: = stridulation; q.v.

Sonoran faunal areas: see upper and lower Sonoran.

Sonorific: sound producing: applied to stridulating organs.

Sordid: dirty; dull.

Spadiceous: bay brown [dragon's blood + brown ochre].

Spado: the worker or neuter in bees and ants.

Sparse: scattered: single hairs, scales or sculptures set well apart.

Spatha: a median piece in male genitalia of aculeate Hymenoptera, covering the bases of the sagitte.

Spatula: the breast bone (q.v.) of cecidomyid larvae.

Spatulate: rounded and broad at top, attenuate at base.

Specialization: the adaptation of an organ to a definite purpose, or of an organism to fit a determinate environment.

Species: an aggregation of individuals alike in appearance and structure, mating freely and producing young that themselves mate freely and bear fertile offspring resembling each other and their parents: a species includes all its varieties and races.

Specific character: a feature common to all individuals of a species, by means of which they may be distinguished from all other individuals of other species: = essential character.

Specular: mirror-like: transparent.

Specular membrane: in male Cicada, the inner or posterior mirror-like membrane of the sound-organ: = mirror.

Speculum: a transparent area or spot on wings of some Lepidoptera; the glassy areas at base of tegmina in male Orthoptera that serve as sounding boards: a spot on the neck of some caterpillars.

Sperm: the seminal fluid: in plural form is sometimes used as = spermatozoa; q.v.

Spermatheca: = spermatotheca; q.v.

Spermatid: the final cells which are converted without further division into spermatozoa: they arise by division of the second spermatocytes (Wilson).

Spermatocytes: the cells arising from the spermatogonia. The primary spermatocyte arises by growth of one of the last generation of spermatogonia. By its division are formed two secondary spermatocytes, each of which give rise to two spermatids (Wilson).

Spermatogenesis: the development of spermatozoa.

Spermatogonia: the descendants of the primordial germ cells in the male. Each ultimate spermatogonium typically gives rise to four spermatozoa.

Spermatophora: a sac or case containing spermatozoa.

Spermatotheca: the sac or reservoir in the female, that receives the sperm during coition: = spermatheca and receptaculum seminis.

Spermatozo?n-zoa: the male cell or cells which, by uniting with the ova, fertilize them.

Spherical: in the form of a sphere: a body in which all diameters are equal.

Spherule: a minute sphere or globule.

Spicula: a slender needle-like process: e.g. the sting in bees: also employed as = ovipositor: q.v.

Spiculiform: like a slender, needle-like process.

Spiculum: a small spicule or thin, pointed process.

Spinate: produced into an acuminate spine.

Spindle-shaped: cylindrical, elongate, thicker in the middle, tapering to each end: fusiform.

Spine: a sharp process: in Coccidae there are two, one each side of each segment of the pygidium.

Spiniferous: bearing, or clothed with spines.

Spiniform: in the form or shape of a spine.

Spinneret: the ligula in bombycid and some other larvae, modified for silk spinning: any organ consisting of an internal tube, terminating in a pore, spine or process, producing a silky or waxy fibre: in the plural, the organs concerned in the emission of the silky or cottony filaments of which the scales or sacs of Coccidae are produced: = fusulus.

Spinose -ous -ed: set with acute processes or spines.

Spinous-radiate: beset with spines in a circle, either concatenate, united at their bases, or setaceous, like bristles.

Spinulae: spinous processes at the apex of the tibia: also called spines, spurs or heels.

Spinulate -ose: set with little spines or spinules.

Spinules: little spines.

Spira: the coiled ovipositor of Cynipidae.

Spiracle -cula: a breathing pore: q.v.: in the plural the lateral openings on the segments of the insect body through which air enters the tracheae:= stigmata.

Spiracular area: the anterior of the three areas between lateral and pleural carinae on the metanotum of some Hymenoptera: =first pleural area.

Spiracular line: in caterpillars is that which includes the spiracles: = stigmatal.

Spiracular sulcus: on the metanotum of Hymenoptera, is a grooved linear channel extending from spiracle to apical margin.

Spiral: rolled up like a watch spring, or twisted like a cork-screw. {Scanner's comment: Nowadays it is more correct to regard the corkscrew as helical and the watch spring as spiral.}

Spiral fibre: the spiral thickening or folding of the chitinous lining of a trachea, which gives to the latter its characteristic microscopic appearance as well as its support and elasticity:= ctenidium.

Spirignath: = spiritrompe.

Spiritrompe: the spiral tongue in Lepidoptera.

Splanchnic: applied to the outer embryonic layer of the rudiment of the mid-intestine: or the inner layer of the mesoderm which, becoming applied to the walls of the alimentary canal, develops into the muscle fibres thereof.

Splendens -ent: shining: with a metallic glitter.

Splitter: one who splits or describes species or genera upon minute characters which the "Lumper" (q.v.) deems insufficient to authorize them.

Spongioplasm: the net-like structure of protoplasm in a cell.

Spongiose: a soft, elastic tissue resembling a sponge.

Spoon: = bouton; q.v.

Spring: in Collembola. = furcula: q.v.

Spur: a short, stiff, generally blunt process and usually not articulated at its base: in the plural refers to paired spiniform processes at or near the end of tibia:.

Spur formula: a numerical expression of their arrangement; as 2-3-4; two spurs on fore tibia, 3 on middle, and 4 on posterior; in Trichoptera.

Spurius: false: applied to aborted anterior legs in some diurnal Lepidoptera. Spurious cell: in Diptera (Pack.), = 3d anal (Comst.).

Spurious veins: certain folds or thickenings in the wing surface which resemble a vein so nearly as to be readily mistaken and sufficiently constant to be useful in classification.

Squama: in Odonata, the sclerite that bears the palpus of both maxilla and labium: the scale-like first abdominal segment of some ants: a scale-like appendage covering the base of primaries in Lepidoptera, and so = patagium; q.v.: a small scale above the halteres in Diptera: in this order Packard uses squama for the lobed scale and restricts alula to the lobe-like appendage: Osten-Sacken uses squama for the posterior scale alone and antisquama for the anterior.

Squames: the flattened, fimbriated or spine-like marginal processes of the pygidium in Diaspinae, other than the lobes and true spines: = "plates," of Comst.; or "scaly hairs" of Maskell.

Squamiform: having a scale-like form.

Squamose -ous: scaly or covered with scales.

Squamula: a small corneous scale covering the base of primaries in some insects: = tegula, q.v.: in Diptera, = alula.

Squarrous: scurfy: clothed with rough scales differing in direction, standing upright, or not parallel to the surface.

Stadium -ia: the interval between the molts of larvae:= instar q.v.: any one period in the development of an insect.

Stage: refers to the period of development; e.g. larval, pupal, etc.

Stalked bodies: = gyri cerebrales; q.v.

Stellate: star-shaped; with four or five radiating lines.

Stelocyttares: social wasps in which the comb layers of the nest are supported by pillars and not connected with the envelope: see poecilocyttares and phragmocyttares.

Stemapoda: the modified filamentous anal legs of Cerura and other Notodontid larvae.

Stemmata: simple eyes or ocelli; q.v.

Stem-mother: in plant lice; that form hatching from the winter egg, which starts a series of agamic summer generations.

Stenocephalous: with a narrow, elongate head.

Stenorhynchan: narrow beaked or snouted.

Stenothorax: a supposed ring between pro- and meso-thorax.

Stercoral: relating or pertaining to excrement.

Sterile: not capable of reproducing its kind.

Sternal orifice: in Perlids; a peculiar slit on each side of the sternum, extending inward and ending blindly := furcal orifice.

Sternal spatula: = breast-bone; q.v.

Sternauli: the short and often obsolete furrows on either side of the mesosternum in Hymenoptera.

Sternellum: the second sclerite of the ventral part of each thoracic segment frequently divided into longitudinal parts which may be widely separated.

Sternite: the ventral piece in a ring or segment.

Sternopleura: in Diptera, the lower part of the pleura, below the sternopleural suture and above the front coxa.

Sternopleural bristles: in Diptera, are situated on the sternopleura below the sternopleural suture.

Sternopleural suture: in Diptera, is below and nearly parallel with dorso-pleural suture, separating the mesopleura from the sternopleura.

Sterno-rhabdite: a sternal rhabdite.

Sternorhynchi: that series of Homoptera in which the beak or rostrum apparently arises from the sternum between the anterior coxae; e.g. plant lice, etc.

Sternum -a: the breast: the middle portion of the under surface of thorax, between the coxal cavities.

Stethidium: the trunk: the entire thorax with all its appendages.

Stigma: a spiracle or breathing pore: a dense, often discolored portion of the costal margin of a wing, usually at the end of the radius; see anastomosis: in Diptera, a colored wing spot near the tip of the auxiliary vein: in Lepidoptera, the specialized patch of black scales on the primaries of Hesperidae.

Stigmata: the spiracles: also applied to the two spots, orbicular and reniform, in the cell of the primaries of certain moths.

Stigmatal line: in caterpillars, = spiracular; q.v.

Stigmatiferous: applied to processes or structures bearing spiracles or stigmata.

Stimuli: the small acute spines on some larva, especially wood-borers

Sting: the modified ovipositor in aculeate Hymenoptera.

Stipes: the foot-stalk of the maxilla; articulated partly to the head, partly to the cardo, and bearing the movable parts: modified into a piercing structure in some Diptera and into a lever for flexing the proboscis in others.

Stipitate: supported on a stalk or pedicle.

Stipites: the outer pair of forceps in male genitalia of aculeate Hymenoptera see sagittae.

S. T. line: sub-terminal line; crosses the primaries of many moths just before the outer margin.

S. T. space: the area between the t.p. line and s. t. line in moths.

Stirps: a stock or stem: a division of classification similar to super-family: not used at present.

Stoma -ata: a breathing pore or pores:= stigma; q.v.

Stomach: that portion of the alimentary canal, immediately following the gizzard and preceding the ileum, into which most of the digestive juices are poured = chylific ventricle.

Stomatodaeum: that invagination of the ectoderm that forms the mouth, pharynx, oesophagus, crop and gizzard.

Stomatogastric: that system of nerves and ganglia, lying along the dorsal and lateral surfaces of gullet and crop.

Stomatotheca: that part of the pupa covering the mouth structures.

Stramineous -eus: straw yellow [pale clay yellow].

Strangulate: constricted, as if by bands or cords.

Stratified: arranged or made up in layers.

Strepsiptera: twisted-wing: an ordinal term proposed for the parasitic Stylopidae, now ranged as a family of Coleoptera = Rhipiptera.

Stria: in Coleoptera, a longitudinal depressed line or furrow, frequently punctured, extending from base to apex of elytra: in Lepidoptera, a fine transverse line: in general, any longitudinal impressed line.

Striate -ed: marked with parallel, fine, impressed lines; or, in Lepidoptera, with numerous fine transverse lines.

Stridulate: to make a creaking noise by rubbing together two ridged or roughened surfaces.

Stridulation: a creaking sound produced by rubbing together two striated or otherwise roughened surfaces: the act of stridulating or the noise produced by it.

Striga: a narrow, transverse line or slender streak, either surface or impressed. {Scanner's note: the proper plural is strigae}

Strigate: having striga: applied to a surface on which the striga are impressed as in the elytra of some beetles, or to an ornamentation composed of fine, short lines. {Scanner's note: sic; the proper plural is strigae}

Strigile -is: maculation that consists of parallel longitudinal lines: a deep sinus near base of first joint of anterior tarsus.

Strigillate -ation: = stridulate -anon; q.v.

Strigose: clothed with rigid bristles that are thickest at base: rough, with sharp bristles: = hispid.

Strigula: a fine short transverse mark or line.

Strigulated: with numerous strigulae.

Striolate -us: with finely impressed parallel lines.

Stripe: a longitudinal streak of color different from the ground.

Style: in Aphids, the slender tubular process at the end of the abdomen: in Coccids, a long spine-like appendage at the end of the abdomen of the male; = genital spike: in Diptera, the ovipositor (Loew); the single immovable organ immediately below the forceps in male Tipulidae (O-S.) a thickened jointed arista at or near the tip of the third antennal joint in the plural form applied to small, usually pointed, exarticulate appendages, most frequently found on the terminal segments of abdomen.

Stylet: a small style or stiff process: one of the piercing mouth structures in Diptera and Hemiptera.

Styliform: in the shape of a stylus: terminating in a long slender point, like the antenna in some Diptera.

Stylopized: infested by a member of the Stylopidae.

Stylotrachealis: with a long tube bearing a stigma, from the head case; as the pupa of some Diptera.

Stylus: a small, pointed, non-articulated process.

Sub-: as a prefix, means that the main term is not entirely applicable, but must be understood as modified in some way; e.g. sub-ovate, may be either more or less than ovate and may be irregular in outline.

Sub-aduncate: somewhat hooked or curved.

Sub-anal plate: Orthoptera; = sub-genital lamina; q.v.

Sub-apical lobe: of male genitalia in Culicids is the inner sub-apical lobe of the side piece.

Sub-apterous: almost wingless; with rudimentary wings only.

Sub-clavate: somewhat thickened toward tip; but not quite club- shaped.

Sub-coriaceous: somewhat leathery.

Sub-cortical: beneath the bark; as in larval borings, etc.

Subcosta: (Comst.); that longitudinal vein extending parallel to the costa and reaching the outer margin before the apex; not branched as a rule of Packard, in Hymenoptera, = radius (Comst.).

Subcostal cell: in Diptera (Schiner), = marginal cell (Loew), = radial 1 (Comst.) in the plural (Comst.), all those cells anteriorly margined by the subcosta first s.c. cell in Hymenoptera (Pack.), = radial and first radial 1 (Comst.).

Subcostal crossveins: in Odonata, are between subcosta and media on the basal side of the first antecubital.

Subcostal fold or furrow: lies between costa and radius.

Subcostal nervule: Lepidoptera, on secondaries:= media 1 (Comst.): s.c. 1 = radius 1 (Comst.); s.c. 2:= radius 2 (Comst.) s.c. 3 = radius 3 (Comst) s.c. 4 = radius 4 (Comst.) s.c. 5 = radius 5 (Comst.).

Subcostal vein: in Diptera (Schiner), = 1st longitudinal vein (Meigen) radius 1 (Comst.): in Lepidoptera, runs from base, parallel to costa, to or beyond the middle, giving rise to branches which extend to the outer margin and thus = radius (Comst.).

Sub-cristate: with a moderately elevated ridge or keel on pronotum, in Orthoptera.

Subcutaneous: under the skin: applied to larvae that feed under the skin of animals or within the substance of a leaf.

Sub-dorsal: the space between the dorsum and the stigmata.

Sub-dorsal line: in caterpillars is to the side of the dorsal and between it and the lateral or, if there is an addorsal line, between that and the lateral.

Sub-dorsal ridge: in slug caterpillars, extends longitudinally along the sub-dorsal row of abdominal tubercles.

Sub-equal: similar, but not quite equal in size, form or other characters.

Sub-eroded: wing margins when somewhat, but irregularly, indented.

Sub-falcate: when a wing is only a little excavated below the apex.

Subfamily: a division of classification containing a group of closely allied genera; different from other allied groups, yet not so as to make a family series: opinionative, and ending in -inae.

Sub-fossorial: legs used in digging: yet not greatly modified.

Sub-frontal: close to the front; immediately behind the front margin.

Sub-fulcrum: a sclerite between mentum and palpiger: rarely present.

Sub-fusiform: somewhat spindle-shaped.

Subgalea: a maxillary sclerite or segment, attached to the stipes, and bearing the galea or outer lobe.

Sub-geniculate: applied to antennae that are articulated from a short, thick scope.

Subgenital lamina or plates: plates underlying the genital organs in Orthoptera.

Subgenus: a division within a genus, based upon a character not sufficient for generic separation; opinionative.

Subglossa: in Odonata; a sclerite between the two halves of the mentum (Graber): is really the true mentum.

Sub-imago: sometimes applied as = nymph: that stage in Ephemerida just after emergence from the pupa and before the final molt during flight: that stage in the development of insects with free pupa when the insect is fully colored but yet retains its pupal position.

Sub-labrum: =epipharynx; q.v.

Sublingual: beneath the tongue; applied to a pair of salivary glands in bees.

Submargin -al: an imaginary portion of a surface outside of the disk and within the margin: a line is submarginal when it is well within the margin but close to it.

Submarginal area: of secondaries, lies between the costal margin and the 1st strong vein.

Submarginal cells: in Hymenoptera (Norton) = radial cells (Comst.): in Diptera (Will.); = radial 3 (Comst.).

Submarginal nervure: in Hymenoptera (Nort.); the irregular line of veins extending on the whole parallel with the outer margin; composed in part of media 1, 2, 3 and 4, the medial cross vein and cubitus 1 (Comst.).

Submedian cells: in Hymenoptera (Pack.); 1st = cubital + cubital 1 (Comst.) 2d = medial 3 (Comst.); 3d = 2d medial 2 (Comst.).

Submedian vein: in Odonata, =cubitus (Comst.); in Lepidoptera, = 1st anal (Comst.), runs from base of primaries to the hind angle, close to the inner margin and is v. 1 of the numerical series.

Submental: pertaining to the submentum.

Submental peduncle: in Coleoptera, the prolonged portion of the gula supporting the mentum.

Submentum: the basal sclerite of the labium, by means of which it is attached to the head.

Subnodal sector: in Odonata, = radial sector (Comst.).

Sub-nymph: applied to the resting or pupal stage of female Coccidae; also to a supernumerary stage before the formation of the pupa, and thus = pseudo-pupa.

Sub-ocellate: an ocellate spot that is blind or without a pupil.

Sub-ocular: beneath or below the eyes.

Sub-oesophageal ganglion: situated in the head below the oesophagus, formed by a union of the posterior three primitive head ganglia.

Suborder: a division of an order higher than a family, based on a character common to a large series of species; e.g. the Homoptera and Heteroptera in the order of Hemiptera.

Sub-pedunculate: in Coleoptera, when the constriction between pro- and meso-thorax is so great as to give the appearance of a narrow waist.

Subreniform: a rounded spot or outline, below and sometimes attached to the reniform spot in Catocala and some allied Noctuids.

Sub-parallel: nearly parallel.

Sub-primary sub-ventral tubercle: on the thoracic and abdominal segments of caterpillars; sub-ventral, posterior, not present in the primitive first stage; it is VI of the abdomen, V of the thorax: constant.

Sub-sellate: nearly like or approaching the form of a saddle.

Sub-servate: denticulate.

Subspecies: a well-marked form of a species differing from the type in some character of color or maculation which is recognizable but does not prevent a fertile union: an indefinite and opinionative division.

Subspiracular line: in caterpillars, margins the spiracles inferiorly.

Substigmatal: that portion of the marginal cell below the stigma, in bees: = 1st radial 1 (Comst.): applied to a line in caterpillars = subspiracular.

Sub-teres: nearly but not quite cylindrical.

Subtile -is: slightly; feebly; small; pretty; graceful.

Subtriangular space: = internal triangle: see triangle.

Subtus: beneath; at the under surface.

Subulate: awl-shaped: linear at base, attenuate at tip.

Subulicornia: with awl-shaped antennae; applied to a combination of Odonata and Ephemerida.

Subuliform: formed like an awl: = subulate.

Sub-ventral line: in caterpillars, extends along the sides just above the base of the feet at lie edge between lateral and ventral.

Sub-ventral ridge: in slug caterpillars extends longitudinally along the sub-ventral series of abdominal tubercles.

Sub-ventral space: in slug caterpillars is the area on each side, between the lateral ridge and the lower edge of the body, and contains the spiracles.

Succincti: those chrysalids of butterflies which are held in place by a silken cord passing around the body: see suspensi.

Succineous: resembling amber in color or appearance.

Sucking pump: in sucking insects, a thick-walled muscular enlargement of the oesophagus that serves to draw up the liquid food = pharyngeal pump.

Sucking spears: the mandibles and maxillae of Hemerobiid larvae, used for puncturing prey and sucking its juices.

Sucking stomach: a thin-walled muscular pouch connected with the end of the oesophagus; serves as a food reservoir and is not commonly present except in some Lepidoptera.

Suctoria: an ordinal term proposed for fleas.

Suctorial: adapted for sucking: see haustellate.

Suctorial vesicles: bladder-like structures connected with the oesophagus in mosquitoes supposed to assist in blood-sucking; but this is disputed.

Suffused: clouded or obscured by a darker color.

Suffusion: a clouding, or a spreading of one shade over another.

Sulca: grooves, furrows or channels: plural of sulcus.

Sulcated: grooved; furrowed with broad, concave, parallel impressed lines.

Sulciform: resembling a sulcus.

Sulcus: a furrow or groove: a groove-like excavation.

Sulphureous -eus: bright, sulphur yellow [chrome lemon].

Superans: exceeding in size and length.

Superciliary: placed above the eyes.

Supercilium: an arched line over an ocellate spot.

Super-family: a division of classification less than an order, including a series of family groups more closely related to each other than to similar groups within the order: opinionative and ending in oidea: sometimes hardly different from suborder; but lower than suborder when both terms are employed.

Superficies: the upper surface.

Supericornia: those Heteroptera having the antenna inserted on the upper parts of the sides of the head; e.g. Coreidae: see infericornia.

Superior wings: the primaries; q.v.

Superlinguae: the lateral pair of organs of hypo-pharynx in Thysanura.

Superlingual segment: the fifth segment of head.

Superne: denotes all those parts belonging to the upper surface.

Supernumerary: additional or added cells, veins or other structures.

Supernumerary segment: in Cecidomyidae, between the head and first thoracic segment.

Super-order: a group of allied orders, like the Linnaean Neuroptera.

Superposed: placed one above the other, as the frontal tufts in some moths.

Supplementary sectors: interposed sectors; q.v.

Suppression: the non-development of a part normally present.

Supra-: over; above.

Supra-alar bristles: in Diptera, are situated, one on the post-alar callus, one on the alar frenum, the third on the edge of the supra-alar depression.

Supra-alar cavity: = supra-alar groove.

Supra-alar depression: in Diptera = supra-alar groove.

Supra-alar groove: in Hymenoptera, a groove or depression just above the base of wings: in Diptera, a groove on the meso-thorax just above the root of the wings.

Supra-anal: situated above the anus.

Supra-anal hook: in male of most Lepidoptera, a curved hook attached to the plate covering the genital cavity: = uncus.

Supra-anal plate: a triangular sclerite covering the anal cavity above; present in many insects, sometimes in one sex only, often in both: see anal operculum.

Supra-cerebral: applied to that pair of salivary glands situated above the brain in bees.

Supra-clypeal mark: in bees; a patch of light color above the clypeus.

Supra-clypeus: = post-clypeus; q.v.: = nasus.

Supra-Oesophageal: situated above the oesophagus: applied to two large ovoid ganglia so situated, and connected by a short, thick commissure; - the brain.

Supra-orbital: situated above the eye.

Supra-spinal: above the spine or nerve cord: applied to a cord or band of connective tissue lying above the central nervous system in adult Lepidoptera also to a sinus or vessel acting as a ventral heart.

Supra-spiracular line: in caterpillars, margins the spiracles superiorly.

Supra-stigmatal line: = supra-spiracular lines.

Supra-triangular cross-veins: in Odonata, cross the supra-triangular space.

Supra-triangular space: in Anisoptera, an area just above the triangle, occupying nearly the same position as the quadrilateral of Zygoptera: hyper-trigonal space.

Suranal: = supra-anal.

Suranal plate: the middle dorsal plate attached to the l0th abdominal segment of the male grasshoppers, above the anal opening: a supra- anal tergite of a caterpillar.

Sursum: directed upwardly.

Suspensi: the chrysalids of butterflies that are suspended by the tail only: see succincti.

Suspensoria: are those muscles or ligaments that hold the viscera and other internal structures in place.

Sustentors: the two posterior projections of a butterfly chrysalis.

Suture: a seam or impressed line indicating the division of distinct parts of body wall: the line of junction of elytra in Coleoptera.

Suturiform: an articulation soldered together so that only a slight impressed line is visible.

Swarming: the concerted departure from a hive of a large number of worker bees, accompanied by a queen; this forming the nucleus of a new colony.

Swimmerets: gill or plate-like structures in the aquatic larvae of some Neuroptera, serving as oars or organs of locomotion.

Swimming paddles: terminal appendages of mosquito pupae.

Swoked: smoky, suffused with gray or blackish.

Sylvan: species inhabiting forests or woodland areas.

Symbiogenesis: the method of origin of social symbiotic relation among ants and other insects.

Symbiosis: a life relationship existing between different kinds of animals or plants, or between animals and plants: true symbiosis is where both parties to the relation benefit: see also parasitism, commensalism. Among the ants social symbiosis exists in its most highly developed form and distinctive terms have been proposed for the various types of relations:

Calobiosis, is that association in which one species, often only the female, lives in the nest of and at the expense of another species, either for a time, = temporary - or altogether, = permanent calacobiosis. {Scanner's note: sic}

Cleptobiosis, is where one species of ant lives in or near the nest of another, preying upon its larvae or pupae or stealing the food supply.

Dulosis, is that mingling of colonies which owes its origin to the enslavement of one species by another.

Hamabiosis, is that relation where two species of any insects, one of which may be an ant, live side by side without obvious motive or known advantage to one or both.

Lestobiosis, is where the workers of one ant colony "hold up" those of another species and rob them of the food they are carrying to the nest.

Parabiosis, is where different species of ants form colonies with inosculating galleries, and have their households strangely intermingled, but not blended.

Phylacobiosis, is the relation existing between ants and Termites, the ants living in the doorways of the Termites and functioning as guards.

Synclerobiosis, is an association of two species of ants that usually inhabit independent colonies, for purposes that are not clearly understood.

Trophibiosis, is the relationship between ants on the one hand and aphids, coccids and the like on the other; these species being sought and attended by the ants for their own benefit: see myrmecophily.

Xenobiosis, is where one species of ant lives as a guest in the nest of another, maintaining its own household, and mingling freely with the host species, the two living on terms of mutual toleration.

Symbiotic: species that live together in a state of symbiosis.

Symmetrical: evenly developed on both sides.

Symmetry: that regular arrangement of organs or parts which is capable of division into similar halves or similar radii.

Sympathetic nervous system: applied to the nerves and ganglia of the alimentary canal and sonic other viscera which they innervate; = vagus; visceral nervous system.

Symphily: the relation borne to ants by the true guests which inhabit their nests and are fed and tended: rendering in return some substance or service desired by the ants: see metochy and synechtry.

Symphyla: a group name for apterous species resembling myriapods in appearance, with functional abdominal legs and the genital openings on the last abdominal segment: regarded by some as connecting forms between insects and myriapods, e.g. Scolopendrella.

Symphysis: where two sclerites are joined together by a soft membrane, permitting a slight motion.

Synaptera: originally wingless insects without metamorphosis; the Thysanura.

Synarthrosis: an articulation without motion.

Syncerebrum: the compound brain of insects.

Synchronous: happening at the same time.

Synciput: that portion of the vertex lying between the eyes.

Syncitium: masses of protoplasm with nuclei, found in ovarian tubes; giving rise to ova, nutritive cells or both.

Syndesis: that method of articulation where two parts are connected by a membrane which permits of considerable motion between them.

Synechtry: the relation borne to ants by insects inhabiting their nests in spite of the efforts of the ants to destroy them: see symphily and metochy.

Synista or Synistata: those Neuropterous insects in which the mouth structures are undeveloped, forming an imperfect tubular structure: see elinguata.

Synoecy: the relation that exists between ants and those guests that are indifferent to and tolerated by them:= metochy, and see symphily and synecthry.

Synonym: a name applied to a species or genus that has been previously named and described.

Synonymous: words of different derivation applied to the same conception.

Synthlipsis: the basal constriction of the notocephalon in Notonectids.

Syntype: = co-type; q.v.

Syringe: in Hemiptera, a chamber into which the salivary ducts open and by means of which the secretion is forced forward between the seta or lancets.

System: an order of arrangement.

Systematic: in definite order, or arranged according to a system.

Systole: that regular contraction of the heart that sends the blood outward: see diastole.

T

T. A. line: transverse anterior line; crosses the primaries of certain moths one-third or less from the base: = antemedial line.

Tactile: used for touching; an organ that has the sense of touch.

Taenia: a broad longitudinal stripe.

Taeniate -us: with broad longitudinal markings.

Taenidium -ia: the band or chitinized fibre forming a part of the spiral thread in the trachea of insects.

Tail: an elongated terminal segment of the abdomen: the cauda in plant lice: elongated processes on the secondaries, in some Lepidoptera and Neuroptera.

Tangential: set in or meeting at a tangent; applied to ornamentation and processes.

Tarsal: relating to the tarsi, or feet.

Tarsal lobes: membranous appendages arising from the underside of the tarsal joints in some Coleoptera.

Tarsus -i: the foot; the jointed appendage attached at the apex of tibia. bearing the claws and pulvilli.

Taste cups: specialized pits or cups, with or without a peg or hair, connected with ganglionated nerve cells: occur on the mouth structure and evidence the sense of taste.

Tawny: a brownish yellow, like the color of a tanned hide [pale cadmium yellow + Indian red].

Taxonomical: systematic: relating to classification.

Testate: covered; concealed: also used as = tectiform.

Tectiform: roof-like, sloping from a median ridge, like the primaries of Cicada.

Tegmen: a covering: sometimes used for the anterior wings in Orthoptera and Neuroptera.

Tegmina: the thickened primaries serving as wing covers in Orthoptera.

Tegulae: small, more or less cup-like scales at the base of primaries in many insects; specifically in Hymenoptera: in Lepidoptera, = the patagia or shoulder tippets; but the homology is disputed; also applied to the lappet-like pieces forming the collar: in Diptera, the alulae, q.v.: the latter use is unfortunate and should be abandoned; the first definition should limit the use of the term: see aileron.

Tegument: a covering surface or skin.

Teleodont: applied to those forms of male Lucanids bearing the largest mandibles: see mesodont, amphiodont, priodont.

Telescopic: arranged so that one portion of an organ or process may be drawn into another, like the joints of a telescope.

Telson: a terminal tubercle bearing the anal opening: the anal segment of the insect embryo.

Telum: a spear, or spear-shaped process.

Temple: the posterior part of the gena; behind, before or beneath the eye.

Tempora: the temples.

Temporal margins: in Mallophaga, the lateral margins of the hind head.

Tenaculum: in Collembola, a small organ which holds the furcula in position when at rest: = catch.

Tenant hair: see tenent hair.

Tendo: the anal area of secondaries when it forms a groove for the abdomen: has also been called frenum and frenulum: in Trichoptera, a small elliptical space at base of hind wings near base of anal veins and behind the trochlea.

Tendon: the slender, chitinous plates, bands, strap- or cup-shaped pieces, to which muscles are attached for moving appendages: see apodeme.

Tenent hair: specialized hair adapted for clinging or clasping.

Teneral: that state of the imago just after its exclusion from pupa or nymph, in which neither coloring nor clothing is fully developed.

Tensor: a muscle which stretches a membrane.

Tentacle: a flexible sensory or tactile process; in some cases retractile: usually prefixed by a descriptive term indicating the structure to which it is attached.

Tentacular -um: retractile processes on the larvae of Lepidoptera.

Tentaculate: a margin when fringed with soft tactile processes.

Tentiform: shaped like a tent: see mines.

Tentoria: Diptera; two hollow, cylindrical struts which pass from the ventral border of the occipital foramen to the cheeks.

Tentorium: a chitinous frame-work within the head, upon which the brain rests.

Tenuis: thin, slender; long drawn out.

Terebra: a borer or piercer: an ovipositor fitted for boring or cutting as in saw-flies: a mandibular sclerite articulated to the basalis; forms the point of the structure and = the galea of the maxilla.

Terebrant: with an ovipositor fitted for piercing or boring.

Terebrantia: Hymenoptera with sessile abdomen and valved ovipositors: Thripids in which the ovipositor of female is borer-like.

Teres, Terete: cylindric or nearly so.

Tergal: belonging to the primitively upper surface: see dorsal.

Tergal suture: the Y shaped dorsal suture on the head of many insect larvae.

Tergite: the primitively dorsal part of a segment, especially when that part consists of a single sclerite; usually applied to the abdomen.

Tergo-pleural: the upper and lateral portion of a segment.

Tergo-rhabdites: the lower pair of corneous appendages forming the ovipositor in grasshoppers: plates on the inner dorsal surface of the abdominal wall.

Tergum: the primitively upperor dorsal surface whether it consists of one or more than one sclerite and specifically of the abdomen: in Odonata and Orthoptera, applies to thorax as well.

Termen: the outer margin of a wing, between apex and hind or anal angle.

Terminal: situated at the tip or extremity; opposed to basal.

Terminal line: in Lepidoptera, runs along the outer margin of the wings.

Terminal space: the area between the s. t. line and terminal line in certain Lepidoptera.

Terminology: the technical nomenclature of any science.

Termitarium: a nest, natural or artificial, or a colony of Termites.

Terrestrial: living on or in the land; opposed to aquatic.

Tessellated: checkered; more or less like a chess-board. {Scanner's comment: More correctly, it means "tiled", covered with possibly regularly shaped areas or pieces. They may or may not be square or otherwise regular.}

Test: the secretionary covering of Coccidae, and especially such as are waxy, horny or glassy.

Testaceous: dull yellow brown; tile colored [pale cadmium yellow+burnt sienna].

Testes: the tubular structures in the male, in which the production of spermatogonia, and often also of later stages in the development of the sperm takes place.

Testicular follicles: in the larva, are those structures which in the adult form the tubes composing the testes; in the adult applied also to the tubes forming the testes.

Testudinate -us: resembling the shell of a tortoise.

Tetra-: four: a combining form.

Tetrachaetae: applied to those Diptera in which the mouth structures consist of four longitudinal blades or piercing structures.

Tetradactyle: with four fingers or finger-like processes.

Tetragonal: having four sides or angles: quadrangular.

Tetramera: applied to Coleoptera with four-jointed tarsi.

Tetramerous: having four-jointed tarsi.

Tetrapoda: applied to those butterflies in which the anterior legs are atrophied in whole or in part.

Tetraptera: a term proposed for all insects with four naked, membranous reticulated wings.

Thamnophilous: applied to species living in thickets or dense shrubbery.

Theca: a case or covering: specifically applied to the fleshy covering of the fly-mouth; to the cases of the Trichopterous larvae; to the lower piece of the male genitalia in Homoptera; and to the outer covering of the pupa.

Thelyotoky: parthenogenetic reproduction when the progeny are all females see Arrhenotoly and Deuterotoky.

Thigh: see femur.

Thigmotactic: contact-loving: applied to species that tend to live close together or in touch, one with the other.

Third longitudinal vein: in Diptera (Will.):= radius 5 (Comst.).

Third posterior cell: in Diptera, = 2d medial 2 (Comst.).

Third submarginal cross-nervure: in Hymenoptera (North.):= radius 4 (Comst.).

Thoracic: belonging or attached to the thorax.

Thoracic dorsal bristles: in Diptera, the specialized bristles on the dorsum of the thorax.

Thoracic feet: the jointed legs on the thoracic segments of larvae, as distinguished from abdominal or pro-legs.

Thoracico-abdominal: the first segment of the abdomen when united with the thorax so as to form part of it: =propodeum.

Thoracic pleural bristles: in Diptera, the specialized bristles situated on the pleural region of the thorax.

Thoracotheca: = cytotheca: q.v.

Thorax: the second or intermediate region of the insect body, bearing the true legs and wings: made up of three rings, named in order, pro-, meso-, and meta-thorax: when the pro-thorax is free as in Coleoptera, Orthoptera, and Hemiptera, the term thorax is commonly used in descriptive work for that segment only: in Odonata, where the prothorax is small and not fused with the larger and united meso- and meta-thorax, the term thorax is commonly used for these latter two united, excluding the prothorax.

Thread-plate: an epithelial plate of the embryo from which the terminal threads of the ovarian tubes originate.

Thyridial cell: in Trichoptera: the cell formed by the first fork of median vein; the cell behind Thyridium.

Thyridiate: applied to a wing vein that at one point seems broken so as to permit of a folding or bending; either to pack into a small compass or to enfold the body.

Thyridium -ii: small, whitish or almost transparent spots near the anastomosis of the disc of the wings in some Neuroptera, or in the recurrent veins in the cubital cellule in some Hymenoptera; also the apical margin of the gastrocoeli, often alone visible: in Trichoptera, specifically, a hyaline spot on second fork of median vein.

Thyrsus: a cluster.

Thysanoptera: fringe-winged: an ordinal term, applied to species with four narrow, similar wings, lengthily fringed; mouth parts fitted for puncturing and scraping; metamorphosis incomplete: the Thripids.

Thysanura: fringe-tails; wingless, mandibulate insects without metamorphosis; with anal appendages; body covered with scales; thoracic segments similar.

Tiarate -us: turban or tiara-like.

Tibia -ae: the shank: that part of the leg articulated to the femur basally and which bears the tarsus at the distal end.

Tibial epiphysis: a movable process attached near the base of the inner side of the anterior tibia in many Lepidoptera.

Tibial membrane: in male Cicada, the drum-like vibratory membrane that produces the sound.

Tip: the extremity; the part furthest removed from the base.

Titillator: a small process just below the penis in some Orthoptera.

Tomentose: covered with fine hair, so matted together that particular hairs cannot be separated.

Tomentum: a form of pubescence composed of matted, woolly hair: in Diptera applied to a covering of short, flattened, more or less recumbent, scale-like hair which merges gradually into dust or pollen.

Tongue: an indefinite term, applied usually to the coiled mouth structure of Lepidoptera; the lapping organ of flies; the ligula of bees and wasps and, sometimes also to the hypopharynx of other insects.

Tooth: an acute angulation: a short pointed process from an appendage or margin.

Topomorph -ic: a geographic form, variety or subspecies of a widely distributed species: developed by local environment.

Topotype: is a specimen collected in the exact locality whence the original type was obtained.

Tornal: relating to or concerning the tornus.

Tornus: in Lepidoptera, the junction of the termen and dorsum of wing: = hind or anal angle; q.v.

Torose: swelling into knots or protuberances.

Torpid: lying motionless by reason of cold or other natural conditions that unfavorably affect the organism.

Torqueate: with a ring or collar.

Torquillus: = rotula.

Tortilis: twisted.

Tortulose-us: hump-backed; a surface with a few large elevations: beaded; moniliform.

Tortuose -us: irregularly curved and bent; snake-like.

Tortuous: = Tortuose.

Torulus: the basal socket joint of the antenna upon which the organ is articulated for movement in all directions.

Totidem: in all parts; entirely.

T.P. line: transverse posterior line; crossing the primaries of certain Lepidoptera, two-thirds or more from base: = post medial line.

Trabecula: rounded, lobular masses of the procerebrum, from which arise the stalks bearing the mushroom bodies: a paired movable appendage in front of the antennae in certain bird-lice.

Trachea -ae: the spirally ringed breathing tube or tubes of insects.

Tracheal gills: the flattened or hair-like processes in aquatic larvae through which oxygen is absorbed from the water.

Tracheary: relating to or composed of tracheae.

Tracheate: supplied with trachea: a general term applied to all articulates that breathe by means of spiracular openings into a system of tubular structures that extend to all parts of the body.

Tracheation: the arrangement or system of distribution of trachea.

Tracheoles: the capillary trachea of the adult as they develop in masses in the larva: very small, slender tracheae.

Transection: a cut across, at right angles to the body: transverse section.

Transition zone: is the transcontinental belt in which the austral and boreal elements overlap: it is divided into a humid or Alleghanian area; a western arid area; and a Pacific Coast humid area: all of which see.

Transitory: lasting for a short time only.

Translucent: semi-transparent; admitting the passage of light but not of vision.

Translucid: clear: transparent enough to be seen through.

Transparent: so clear as not to obstruct vision.

Transverse: when the longest diameter is across the body.

Transverse incision: = transverse sulci.

Transverse sulci: the transverse grooves of pronotum in many Orthoptera.

Transverse suture: in Diptera, a transverse groove extending inward from the root of wing and obsolete in the middle of dorsum.

Trapeziform: in the form or shape of a trapezium.

Trapezium: a four-sided figure in which no two sides are parallel. {Scanner's comment: sic This is presumably an error in editing the original text. A trapezium has two sides parallel. Compare next item.}

Trapezoid -al: a four-sided plane of which two sides are parallel and two are not.

Tri-: three; a combining form.

Triangle: in Odonata: a small, triangular cell at the junction of cubitus with cubitus 1: a similar cell adjoining it basally is the internal triangle discoidal triangle: cardinal cell; q.v.

Tri-articulate: composed of three joints or articles.

Tribe: a term of classification less than a subfamily: opinionative and ending in ini: but this is not universally adhered to.

Tri-carinate: with three keels or carinae.

Trichogen: a hair-forming hypodermal cell in caterpillars, etc.

Trichoptera: hairy-winged: insects with hairy primaries with many longitudinal veins and cells, covering the broader secondaries which are usually folded lengthwise; mouth mandibulate but rudimentary: head free; thorax agglutinate: metamorphosis complete.

Trichostical bristles: in Diptera, a fan-like row, situated on the meta- pleura: conspicuous in some families.

Trichotomous: divided by threes.

Trichroism: the condition when any given part exhibits three different colors in different individuals of the same species: e.g. in Lepidoptera, the hind wings of certain Heliconids.

Tricuspidate: ending in three points: with three cusps or teeth.

Tridactyle -ous: having three toes or claws.

Trifid: cleft into three parts or ends.

Trigonal: triangular: an area bounded by a triangle.

Trigonate: three-cornered; approximately triangular.

Trigoneutism: where three broods occur in one season.

Trigonulum: in Odonata, = triangle.

Trimera: that series of Coleoptera, in which there are only three tarsal joints present.

Trimerous: species which have the tarsi three-jointed.

Trinomial: that method of nomenclature in which a varietal or subspecific name follows the specific term without an intervening mark or indications of its rank.

Tripectinate: when an antenna has three branches or processes to each joint.

Triquetral: = triquetrous.

Triquetrous: with three flat sides.

Tri-regional: divided into three distinct parts or regions.

Trito-cerebral segment: see second antennal segment.

Trito-cerebrum: the posterior portion of the brain, formed by the ganglion of the third primary segment; also termed labro-frontal lobe.

Tri-undulate: with three waves or undulations.

Triungulin: the first larval stage of a meloid beetle.

Trivial: applied to a name, means specific as opposed to generic, or popular as opposed to technical.

Trivittate: with three stripes or vitta.

Trochalopoda: Heteroptera in which the posterior coxae are nearly globose and the articulation is a ball and socket joint: see pagiopoda.

Trochanter: a sclerite, sometimes divided, between the coxa and femur sometimes fused with the femur.

Trochanterellus: see apophysis.

Trochantine: the basal part of the trochanter when it is two-jointed: in Coleoptera, a piece often present on the outer side of and sometimes movable on the coxa; also the small sclerite connecting the coxa with the sternum in Dytiscidae: in Neuroptera and Trichoptera the posterior separated part of the coxa: in Orthoptera, a narrow longitudinal sclerite between mandible and gena.

Trochiformis: cylindro-conic.

Trochlea: the thickened base of the hind wings in Cicada: in Trichoptera a small elliptical space at base of hind wing behind origin of median vein.

Trochlearis: pulley-shaped; like a cylinder contracted medially.

Trochus: that part of an articulated body inserted between the joints.

Trophi: the mouth parts collectively, including the labrum: see buccal appendages.

Trophobiosis: see Symbiosis.

Tropical: is that faunal region which covers the southern part of the peninsula of Florida, the greater part of Central America, the lowlands of southern Mexico south of the table land, and a narrow strip on each side of Mexico which follows the coast northward into the United States.

Tropico-politan: occurring in all tropical regions.

Trumpets: breathing tubes of mosquito pupae.

Truncate: cut off squarely at tip.

Truncature: the truncation or point squarely cut off.

Truncus: the trunk or thorax.

Trunk: the thorax as a whole: the body.

Tryptic: acting like tripsin, the proteolytic ferment of the pancreatic fluid.

Tube: a slender, hollow, cylindrical body: specifically applied to the anal siphon or respiratory tube of mosquito larvae.

Tubercle: a little solid pimple or small chitinous button: really a ring, which may or may not give rise to a seta.

Tubercles: on the thoracic and abdominal segments of caterpillars are anterior trapezoidal; posterior trapezoidal; lateral; posterior stigmatal; anterior stigmatal; sub-primary subventral; pedal and adventral: all of which see.

Tubercula: an elevated triangular process at the anterior angle of the thorax specifically in Hymenoptera.

Tuberculate -ose: formed like a tubercle: a surface covered with tubercles.

Tubercule -ulum: a small tubercle.

Tuberculiform: shaped like a pimple or tubercle.

Tuberculose -ous: covered or set with tubercles.

Tubulifera: Hymenoptera, in which the terminal segments of abdomen are retracted, but may be extended, tube-like: Thysanoptera in which there is no ovipositor and the terminal segments of abdomen are tubular.

Tubulous -ose: formed like a tube: fistulous.

Tubulus: the slender, flexible abdominal segments forming the ovipositor in Diptera.

Tubus: a term used to designate the corneous base of a ligula: the sheath of the tongue.

Tumescence: a swelling or tumid enlargement: a puffed up area.

Tumescent: a little swollen or puffed up.

Tumid: swollen; enlarged; puffed up.

Tunica intima: the inner layer of the silk glands: an inner lining or membrane.

Tunica propria: a layer of epithelial cells and connective tissue lining the interior of the hind gut: the outer layer of the silk glands: a covering or investing membrane.

Tunicate: composed of concentric layers, enveloping one another: said of antennae when each successive joint is buried in the preceding funnel-shaped one.

Turbinate: top-shaped; nearly conical: differs from pyriform in being shorter and more suddenly attenuated at base: applied to an eye = pillared eye; q.v.

Turgid: swollen.

Turritus: towering: a surface rising cone-like.

Tylo: = tylus; q.v.

Tylus: the anterior central lobe of the head in Hemiptera.

Tympana: the ears in Orthoptera.

Tympanal: applied to organs covered with a tympanum or stretched membrane supposed to function as ears.

Tympanic spiracle: in Diptera, the thoracic spiracle at base of wing.

Tympanules: small openings covered by a membrane, having otoliths and serving as ears.

Tympanum: any membrane stretched like the head of a drum: specifically applied to the membrane covering the auditory organs in Orthoptera.

Type: a unique or single specimen selected from a series and labelled by the describer to represent his name and description: if male or female be added to the label, the specimen typifies that sex, and in case of an erroneous association the male type stands for the species unless the author has specifically designated the other example as representing the name: see also co-type; homotype; meta-type; paratype; topotype.

Typical: the normal or usual form of a species; agreeing with the type form.

U

Uliginous: muddy, or pertaining to mud.

Ulnar: in Homoptera, a wing vein between the radial vein and claval suture; = cubitus: in Orthoptera, = cubitus; q.v.

Ulnar area: in Orthoptera, = median area; q.v.

Ulona: the thick, fleshy mouth parts of Orthoptera.

Ulonata: a Fabrician. term for Orthoptera, based on the character of the mouth structures.

Ultimate: last or final: that larval stage just before pupation.

Ultramarine: an intense deep blue [cobalt blue].

Ultra-nodal sector: in Odonata, runs parallel with and between media 1 and 2, or principal and nodal sectors: = postnodal sector.

Umbilicate: navel-shaped, or resembling a navel.

Umbilicus: a navel, or navel-like depression.

Umbonate: bossed; with an elevated knob in the centre.

Umbone: an embossed, elevated knob situated on humeral angle of elytra.

Umbones: two movable spines on the sides of prothorax in some Coleoptera.

Umbrosa: shaded or clouded: a cloud or shade.

Unarmed: without spurs, spines or armature of any kind.

Unarticulate: not jointed nor segmented.

Unci: thick, hooked processes, forming the borders of the anal opening.

Uncinnate: hooked at the end.

Uncus: in Lepidoptera, Diptera, and elsewhere, the curved book directed downward from a triangular dorsal plate in the male and shielding the penis: the genital hamule.

Undate: wavy or waved.

Undulated: obtusely waved in segments of circles.

Unequal: unlike in size, form, development or other characters.

Ungues: the tarsal claws.

Unguiculate: armed with a hook, nail or claw.

Unguiculus: a small terminal claw or nail-like process.

Unguis: one of the claws at the end of the tarsus: also applied to a short process on the 6th antennal joint in some Aphids.

Ungula: a hoof, claw or talon.

Ungulate: shaped like a hoof.

Uni-: one, a combining form.

Unicolorous: of one color throughout.

Unidentate: with one tooth only.

Uniplicate: with a single fold or line of folding.

Unique: one only: unlike any other.

Unisexual: of one sex only: applied to Aphids and Cynipids where only parthenogenic females are known.

Upper austral zone: is divided into an eastern humid or Carolinian area, and a western arid or upper Sonoran area, which pass insensibly into each other near the 100th meridian: see Carolinian and upper Sonoran.

Upper field: in tegmina, = anal field; q.v.

Upper margin: of tegmina (Thomas), corresponds to the posterior or anal margin of most authors.

Upper median area: see areola.

Upper radial: in Lepidoptera, = media 1 (Comst.), and is vein 5, or the independent, of the numerical series.

Upper sector of triangle: in Odonata, = cubitus 1 (Comst.).

Upper Sonoran faunal area: that arid part of upper austral west of 100th meridian; covers most of plains in eastern Montana and Wyoming, s. w. South Dakota, west. Nebraska, Kansas, Oklahoma and Texas, and east. Colorado and New Mexico; covers plains of Columbia, Malheur and Harney in Oregon and Washington. In California encircles Sacramento and San Joaquin Valleys and forms a narrow belt around Colorado and Mohave deserts. In Utah covers Salt Lake and Sevier deserts. In Idaho the Snake plains. In Nevada and Arizona irregular areas of suitable elevation.

Uranidin: a yellow coloring matter in some Coleoptera and Lepidoptera.

Urceolate: pitcher-shaped; swelling in the middle.

Ureter: the stalk connecting the malpighian tubules, when they form large tufts, with the intestine.

Uric acid: the characteristic nitrogenous excretion of the malpighian or urinary tubules: composition, C5H4N4O3 (von Furth).

Urinary vessels: = malpighian tubules; q.v.: has also been applied by older authors, to anal glands.

Urite: an abdominal segment and, specifically, its ventral portion.

Uromere: any of the abdominal segments of an arthropod.

Uropoda: any of the abdominal feet of arthropods.

Uropygium: the ovipositor when it is a mere extension of the abdominal segments.

Urosome: the abdomen.

Urosternite: the sternal or under piece of the uromeres.

Urticating: nettling; applied to specialized hairs or processes on the bodies of certain caterpillars, which cause a stinging or burning sensation on the skin.

Ustulatus: scorched: applied to a maculation that has the appearance of having been burned in.

Uterus: the vaginal portion of oviduct: the sometimes enlarged portion of the vagina at junction of the oviducts: = calyx, q.v.

Uterus masculinus: a pouch or sac into which the ductus ejaculatorius opens in the Symphyla.

Utriculi breviores: small vesicular sacs connected with the seminal vesicles in crickets and some other insects.

Utriculi majores: large vesicular sacs or tubular structures connected with the seminal vesicles in crickets and some other insects.

Utriculus: a little bag or hollow vesicle.

Vacuolate: with vacuoles or small cavities, empty or filled with a watery fluid.

Vagina: the tubular structure formed by the union of the oviducts in the female, opening externally to admit the passage of the egg to the ovipositor: receives the penis of the male in copulation and is sometimes called oviduct: "every part, the office of which is to cover, protect or defend the tongue": "the bivalve coriaceous sheath or cover of the spicula": generally, a sheath.

Vaginata: sheathed: an obsolete ordinal term for Coleoptera.

Vaginate: inclosed in a bivalved sheath.

Vagus: sympathetic nervous system; q.v.

Valgate: enlarged at bottom: club-footed.

Valve or Valvulae: the expanded plate-like galea of the maxilla in many Hymenoptera.

Valve: a small, transverse or triangular piece behind the last full ventral segment, at base of plates in male Jassidae and allies.

Valves: in Orthoptera, the corneous pieces of the ovipositor:= corniculi in Lepidoptera, sometimes used to = harpes; q.v.

Valvula = vagina in its application to Dipterous mouth parts.

Valvulae: in Hymenoptera, branches of the genital forceps of male.

Valvular: when two parts join so as to form a valve between them.

Valvular process: in Odonata, a slender, unjointed process at the apex of each genital valve.

Valvule: any small, valve-like process.

Variation: a departure in color or form, from the normal: the sum of the departures from a mean type of any species: it is continuous when there is no break between the extremes; discontinuous when there are gaps without intermediate forms.

Variety: any departure from the normal type of a species which, while retaining the specific characters, is yet recognizably different because of climatic, seasonal or other influences; may occur with the type form or as a geographical race.

Variola: a deep, rounded impression with defined edges.

Variolate -ose: with large, rounded impressions like pock-marks.

Vas deferens: = vasa deferentia, q.v.

Vasa deferentia: tubes from the seminal vesicles or testes of each side, which usually unite into a single ductus ejaculatorius; q.v.

Vasa varicosa: the malpighian tubules.

Vascular: relating to the blood-vessels or circulatory system.

Vasiform orifice: in Aleurodidae, an ovate, triangular or semicircular opening on the dorsum of the last abdominal segment.

Veinlets: in Orthoptera, are the minute transverse ribs or ridges between the longitudinal veins.

Veins: the chitinous, rod-like structures supporting the wings, and especially those extending longitudinally from base to the outer margin nerves nervures; nervules.

Velum: a membranous appendage of the spurs at the apex of anterior tibia in bees a broad process at inner end of fore tibia.

Velum penis: the thin membranous covering of the male intromittent organ also applied to ether covering or shield-like structures of the penis.

Velutinous: velvety: clothed with dense, soft, short hair, like velvet.

Vena: a vein.

Vena dividens: that longitudinal vein of secondaries that marks the beginning of the anal area: = anal 1 (Comst.).

Vena plicata: on the wings of Dermaptera, the vein around which the folding occurs.

Vena spuria: = spurious vein: q.v.

Venation: the system of chitinous frame-work supporting the wings: in Lepidoptera, the veins are usually referred to by numbers which are as follows: on primaries: 1 = anal; 2 = cubitus 2; 3 = cubitus 1: 4 = media 3; 5 = media 2; 6 = media 1; 7 = radius 5; 8 = radius 4; 9 = radius 3; 10 = radius 2; 11 = radius 1; 12 = subcosta: on secondaries: 1, 1a, 1b = anal; 2 = Cubitus; 3 = cubitus 1; 4 = media 3: 5 = media 2; 6 = media 1; 7 = radius 1; 8 = subcosta. See plate III for typical venations of all orders.

Venter: the belly: under surface of abdomen as a whole and of each ring.

Ventose: inflated; puffed out.

Ventrad: extending or directed toward the under side.

Ventral: pertaining to the under surface of abdomen: in Diptera, that face of the leg which is inferior when laterally extended.

Ventral chain: refers to the series of ganglia of the nervous system.

Ventral comb: in Trichoptera, a transverse row of fine teeth on venter.

Ventral diaphragm: is a fine membrane covering the central nerve cords and ganglia: also called ventral heart.

Ventral heart: = ventral diaphragm, q.v.

Ventral plate: a thickening of the blastoderm of an egg from which the embryo, but not the amnion or serosa is formed.

Ventral scale: in Diaspinae, the under part of the puparium, interposed between the insect and the plant.

Ventral tube: in Collembola, a tube or tubercle proceeding from the ventral side of the first abdominal segment.

Ventricose: with a big belly: distended; inflated.

Ventriculus: the true stomach, = chylific ventricle; q.v.

Ventri-meson: the middle line of the ventral surface of the body.

Ventro-cephalad: toward the lower side and anteriorly.

Ventro-dorsad: extending from belly to back.

Venules: the branches of the main veins.

Vermian: worm-like.

Vermicular: worm-like, tortuous: resembling the tracks of a worm.

Vermiculate: worm-like in form: a marking with wormlike tracings.

Vermiform: worm-shaped.

Vernal: appearing in spring.

Vernantia: the molting or shedding of the skin.

Verriculate: with thick-set tufts of parallel hairs.

Verricule: a dense tuft of upright hairs.

Verrucose: having little hard lumps or wart-like elevations.

Versatile: moving freely in every direction.

Versicolored: with several colors, indeterminately restricted.

Vertex: the top of the head between the eyes, front and occiput: in bees, that part of the head adjacent to and occupied by the ocelli: in Notonectids, "the imaginary anterior margin of the notocephalon."

Vertexal: occurring on or near the vertex, or directed toward it.

Vertical cephalic bristles: in Diptera, are two pairs, inner and outer, inserted more or less behind the upper and inner corner of the eye; erect, or the inner pair convergent, the outer pair divergent.

Vertical margin: in Diptera, the limit between front and occiput.

Vertical triangle: in male Diptera, the small triangle upon which the ocelli are situated; limited behind by vertex, in front by eyes.

Verticil: one of the whorls of long fine sensitive hair arranged symmetrically on the joints of the antennae in certain Diptera.

Verticillate: placed in whorls: antennae in which the joints have a circle of long, fine hair as in Cecidomyiids.

Vesicant: blistering: able to produce a blister.

Vesicle of penis: in Odonata, a sac with chitinous walls, attached to the sternum behind the penis.

Vesicles: little sacs, bladders or cysts: applied to extensible organs producing odors or secretions, as in some beetles and caterpillars.

Vesicular: bladder-like; beset with spherical prominences.

Vesicula seminalis: see seminal vesicles.

Vestibule: the space around the ovipositor formed by the projecting margins of the surrounding segments: the space between the occluding structure of the spiracle and the valve opening into the trachea itself.

Vestigial: small or degenerate: only a trace or remnant of a previously functional organ.

Vestiture: the surface clothing, whether of a hairy or scaly character.

Vexhillum: in Hymenoptera, an expansion on the tip of tarsi of certain fossorial groups.

Vibrant: having a rapid motion to and fro.

Vibratile: formed for vibratory motion: used to express the almost continual movement of the antennae of some Hymenoptera, and the wings of some Diptera.

Vibrissae: curved bristles or hairs in some Diptera, situated between the mystax and the antenna: whiskers.

Villi: soft hairs or papillate processes: plural of villus, q.v.

Villose -ous: soft-haired or clothed with soft, short hair.

Villus: a short, hair-like or papillate process on the surface of certain absorbent and sensory organs.

Vinous: wine-color: a deep, transparent red-brown. like claret [purple madder].

Violaceous: violet colored: a mixture of blue and red [violet carmine].

Virescent or Viridescent: greenish or becoming green.

Viridis: green, like verdigris [French blue + chrome yellow + white].

Viscera: the internal organs of the body.

Visceral: relating or attached to the viscera.

Viscid: sticky: covered with a shiny, resinous or greasy matter.

Viscous: thick, sticky or semi-fluid.

Vis formatrix: the creative or formative force.

Vitelligenous: producing the vitellus or yolk: said of certain cells in the ovaries, believed to have that function.

Vitelline -us: yellow, with a slight tinge of red, like yolk of an egg.

Vitelline membrane: the delicate tissue surrounding the yolk of an egg.

Vitreous: glassy; transparent.

Vitta: a longitudinal, colored line.

Vitta frontalis: = frontal stripe: q.v.

Vittate: striped.

Viviparous: applied to insects which bear living young.

Vocal cords: specialized organs on the thoracic spiracles of Diptera, by means of which they produce a humming or singing sound.

Volant: flying or capable of flight.

Vulgar: common; not conspicuous: obscure in appearance and abundant in number.

Vultus: face: that part of head below front and between the eyes.

Vulva: the orifice of the vagina in the female.

Vulvar lamina: in Odonata, the posterior margin of sternum of segment 8.

Vulvar scale: = v. lamina.

W

Wart: a spongy excrescence, more or less cylindric, with a nearly truncated tip: the enlarged, common base of a group of seta: in Trichoptera, a pitted elevation.

Wax: a ductile substance excreted by bees and other insects from glandular structures in various parts of the body, used in building cells or in forming a protective covering.

Wax-cutter: the pincer-like structure formed by the hind tibia and metatarsus in social bees.

Wax-glands: any glands in any part of the body which secrete a waxy product in either a scale, string or powder: in Coccidae, the circumgenital and parastigmatic glands; q.v.

Wax-pincer: = wax cutter.

Wax-scale: one of the scales secreted in the wax pocket or gland of a worker bee.

Whitlows: = paronychia; q.v.

Whorl: a ring of long hair arranged around a centre, like the spokes around the hub of a wheel.

Wing, Wings: membranous reticulated organs of flight; one pair, the primaries, attached to the meso-thorax; the other, the secondaries, attached to the meta-thorax.

Wing covers: those parts of the chitinous cuticle of larvae, nymphs or pupae which cover the rudiments of the wings of the imago: the forewings of an imago when they are thicker than the hind wings and cover them when at rest: see elytra; tegmina.

Wings of the heart: the series of diagonal and other muscular fibres above the diaphragm in the pericardial cavity: see pericardial diaphragm.

Wing cells: areas inclosed by veins: reference should be had to the figures illustrating venation and to the special terms applied to the cells.

Winglets: small, concavo-convex scales, generally fringed at tip, under the base of the elytra in Dytiscidae.

Wing-pads: undeveloped wings of pupa or nymph.

Wing-scale: in Hymenoptera, = tegula; q.v.

Workers: the undeveloped females in the social Hymenoptera; also those sexually undeveloped Termites that are not soldiers.