Explanation of Terms Used in Entomology | Page 4

atmospheric changes: supposed to be located in the antenna.
Aerostats: a pair of large air sacs at base of abdomen in Diptera.
Aeruginose -us: the color of verdigris [blue green].
Aestival: occurring in summer.
Aestivation: applied to summer dormancy.
Afferent: carrying inwardly or toward the centre.
Affinis: related to: similar in structure or development.
Afternose: a triangular piece below antennae and above clypeus: see postclypeus.
Agamic -ous: reproducing without union with a male.
Agamogenesis: reproduction without fertilization by a male: see parthenogenesis; gamogenesis.
Agglomerate: heaped or massed together.
Agglutinate: stuck or glued together; welded into one mass.
Aggregated: crowded together as closely as possible.
Agnathous: without jaws; specifically applied to those Neuropteroid series in which the mouth structures are obsolescent.
Aileron: the scale covering the base of primaries in some insects; see tegulae in Diptera = alula and squama, q.v.
Air-sacs or vesicles: pouch-like expansions of tracheal tubes in heavy insects, capable of inflation and supposed to lessen specific gravity.
Air-tube: a respiratory siphon.
Ala -ae: a wing or wings.
Alar appendage: see alulet.
Alar frenum: a small ligament crossing the supra-alar groove toward the root of the wing: Hymenoptera.
Alary: relating to the wings: applied also to the wing muscles of heart.
Alate -us: winged; with lobes similar to wings in appearance though not necessarily in function.
Albi, albus: white.
Albicans: formed or made of white.
Albidus: white with dusky tinge.
Albinic: of the character of an albino.
Albinism: that condition in which there is an absence of color or a whitening in a form usually colored.
Albino: a colorless individual of a species that is normally colored.
Albumen: the white of egg or the substances in the tissues which have the same characteristics.
Albumin: the characteristic substance forming the white of egg.
Albuminoid: like or of the character of albumen.
Alimentary canal: the digestive tract as a whole; begins at the mouth and extends through the body to the anus.
Alitrunk: that part of the thorax to which the wings are attached: in many Hymenoptera, includes the 1st abdominal segment.
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 sex.
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 sexes periodically produces only parthenogenetic females; the latter, in turn, producing the sexed form; occurs in Cynipidae and some Homoptera: 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;