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 transverse line extending half way across the primaries very close to base.