Explanation of Terms Used in Entomology Part 3

Alizarine: a transparent, orange red [alizar crimson].

Alleghanian faunal area: is that part of the transition zone comprising the greater part of New England, s. e. Ontario, New York, Pennsylvania, Michigan, Wisconsin, Minnesota, eastern N. Dakota, n.

e. S. Dakota, and the Alleghanies from Pennsylvania to Georgia.

Alligate -us: fastened or suspended by a thread; like the chrysalis of Papilio, etc.

Alliogenesis: when the development includes an alternation of generations (q.v.), as in Cynipids.

Alluring glands: glandular structures diffusing an odor supposed to be attractive to the opposite s.e.x.

Allux: next to the last joint of tarsus; in Rhynchophora.

Alpine zone: = arctic zone, q.v.

Alternation of generations: where a species that occurs in both s.e.xes periodically produces only parthenogenetic females; the latter, in turn, producing the s.e.xed form; occurs in Cynipidae and some h.o.m.optera: see heterogeny.

Altus: above: applied to a part raised above the usual level.

Alulae: Diptera; a pair of membranous scales above the halteres, behind the root of the wing, one above or before the other; the anterior attached to the wing and moving with it, the posterior fastened to the thorax and stationary; see calyptra; squama; squamula; lobulus; axillary lobe; aileron; scale; tegulae: Coleoptera; a membranous appendage of the elytra which prevents dislocation.

Alulet: Diptera: the lobe at basal posterior part of wing; = alar appendage; posterior lobe: and has been used as = alula.

Alutaceous: rather pale leather brown [burnt sienna]: covered with minute cracks, like the human skin.

Alveolate: furnished with cells: deeply pitted.

Alveolus: a cell, like that of a honeycomb.

Amber: a transparent, clear, pale yellowish brown; of the color of amber [a mixture of pale cadmium yellow and a little burnt umber].

Ambient vein: Diptera; the costal vein when it extends beyond the apex and practically margins the wing.

Ambrosia: bee-bread: the food cultures of certain Scolytid beetles.

Ambulatoria: that series of Orthoptera in which the legs are fitted for walking only; Phasmids.

Ambulatorial: fitted for walking or making progress on the surface.

Ambulatorial setae: specialized hairs or bristles, situated on the ventral segments of the abdomen of some Coleoptera.

Ambulatory: moves by walking; formed for walking.

Ametabola -ous: insects without obvious metamorphoses, in which the larvae usually resemble the adult and the pupae are active.

Ametabolion: an insect that has no distinct metamorphoses.

Amethystine -us: bright blue with a reddish admixture; clear like an amethyst [between mauve and lilac].

Amnion: the inner of the two membranes enveloping the embryo.

Amnion cavity: a tube-like insinking from the ventral plate of the embryo, extending cephalad.

Amnion fold: the extensions of the amnion which close the mouth of the amnion cavity in the embryo.

Amnios: the first cast skin of the larva when a moult occurs almost immediately after emergence from the egg.

Amoebiform: having the appearance or properties of an amoeba.

Amoeboid: applied to movements similar to those of an amoeba.

Amphibiotica: those pseudoneuropterous insects whose larvae are aquatic but whose imagos are aerial; stone-flies; May-flies; dragonflies.

Amphimixis: the mingling of the germ plasm of two individuals.

Amphiodont: applied to those forms of male Lucanids bearing mandibles of medium size, between teleodont and priodont; =mesodont.

Amphipneustic: applied to larvae which have the spiracles confined to the anterior and terminal segments.

Ample: broad; large; sufficient in size.

Amplected: when the head is received into a concavity of the prothorax; e.g. Hister.

Ampliate -us: moderately dilated.

Amplificatus: dilated; enlarged.

Ampulla: Orthoptera; an extensile sac between head and prothorax used by the young in escaping from ootheca, and later, in molting: Heteroptera; a blister-like enlargement at the middle of the anterior margin of the pro-thorax.

Ampulla-like: flask-shaped; applied to a vascular sac at base of antennae which aids in the blood circulation of head and its appendages.

Amygdaliform: almond-shaped.

Anabolic: the constructive change from food material to animal tissue: see katabolic.

a.n.a.l: pertaining or attached to the last segment of the abdomen; the point or angle of any wing or other appendage that is near to or at any time reaches the tip of the abdomen.

a.n.a.l angle: on the secondaries is that angle nearest the end of the abdomen when the wings are expanded: the angle between the inner and outer margin of any wing; = hind angle of primaries.

a.n.a.l appendages: generally; applied to the external genital parts.

a.n.a.l area: Orthoptera and Neuroptera; the hinder or a.n.a.l portion of a wing within the a.n.a.l vein = axillary area.

a.n.a.l cells: the s.p.a.ces between the a.n.a.l veins (Comst.): in Diptera, a.n.a.l cell (Will.), the s.p.a.ce nearest the body, inclosed by the 5th and 6th veins sometimes called the third basal cell (Coq.) = 1st a.n.a.l (Comst.).

a.n.a.l field: Orthoptera; that area on the tegmina corresponding to the a.n.a.l area of the secondaries.

a.n.a.l filaments: see caudal setae.

a.n.a.l fork: applied to the cerci of Coleopterous larvae.