ion on inner margin of wing, near
base, which separates the alula from the main part.

Axillary lobe: the sclerite covering the base of the wing in Diptera; see
also alula and posterior lobe.

Axillary vein: one or two longitudinal veins toward the inner margin
from the anal vein (Ephemeridae); a group of several (10-20) radiate
veins that occupy the anal field in Orthoptera.

Axis: a small process at base of elytron, upon which it turns.

Azure -eus: clear sky-blue [cobalt blue].

Azygos: unpaired; a structure without a fellow; sometimes applied to
an unpaired oviduct specifically the enlarged portion of the vagina at
the junction of the oviducts and thus = uterus.

B

Baccate -us: berry-like: applied to bladder-like ovaries from the
surface of which the short ovarian tubes arise.

Back: the dorsum or upper surface.

Baculiform: rod or staff-like.

Badius: liver-brown; clearer and lighter than
castaneus [dragon's blood].

Baenomere: a leg-bearing (thoracic) segment.

Baenopoda: the thoracic legs.

Baenosome: the thorax.

Balancers: see halteres.

Bald: without hair or other surface vestiture: see bare.

Band: a transverse marking broader than a line.

Bar: a short, straight band of equal width.

Barb: a spine armed with teeth pointing backward.

Barbate: furnished with barbs; hair with spines or spurs directed
backward.

Barbated: bearded; in antennae with tufts or fascicles of hair or short
bristles on each side of each joint; = brush-like: on the abdomen,
with flat tufts at the sides or tip.

Barbule: a small barb, beard or filiform appendage.

Bare: without clothing of any kind: see bald.

Basad: in the direction of or toward the base.

Basal: at or pertaining to the base or point of attachment to or nearest
the main body.

Basal area: in wings: that space nearest the point where they are
attached to the body: on the metanotum of Hymenoptera, the anterior
of the three median cells or areas = 1st median area.

Basal cell: Diptera; st (Will.), = radial 2 (Comst.); 2d (Will.), = media
(Comst.); Trichoptera; one, two or three cells enclosed by the
branches that form-the post-costal or anal vein: Odonata; an elongate
cell between radius and cubitus, just before the arculus.

Basalis: the principal mandibular sclerite, when sclerites are
distinguishable, to which all other parts are jointed; corresponds to
the stipes in the maxilla.

Basal line: in many Lepidoptera; a transv