Borer: applied to an insect or larva that burrows or makes channels in woody or other vegetable tissue.
Botryoidal: clustered like a bunch of grapes.
Bouton: a button; the terminal lappet-like process at the tip of the ligula in bees: = spoon.
Brachelytra: with abbreviated wing covers or elytra.
Brachia: the arms: has been applied to raptorial fore-legs.
Brachial cells: Hymenoptera; 1st (Nort.), = costal and sub-costal (Comst.) 2d (Nort.), = medial (Comst.); 3d (Nort.), = cubital (Comst.); 4th (Nort.), = 2d anal (Comst.).
Brachial veins: of primaries in Hymenoptera, originate at base, run parallel to inner edge toward anal angle; often connected with the cubital cellules by means of recurrent venules.
Brachycerous: Diptera; with short, 3-jointed antennae.
Brachypterous: with short or abbreviated wings.
Brachyostomata: brachycerous Diptera with short proboscis.
Brain: that ganglion of the nervous system which lies in the head above the oesophagus; formed of the first three primitive ganglia: see supra-oesophageal.
Branchiae: air tubes or gill-like processes of aquatic larva;.
Branchial: relating to the gills or branchiae.
Branchiate: supplied with gills or bronchia.
Brassy: yellow, with the lustre of metallic brass.
Breast: the under surface of thorax or sternum.
Breast-bone: in Cecidomyid larvae; a horny, more or less elongate process of the under side behind the mouth opening, supposed to represent the labium = anchor process.
Brides: Homoptera; two pieces on the face, one each side of clypeus and lower part of front.
Bridge: Odonata; a secondary longitudinal vein connecting the radial sector (Comst.) with Mi + 2, apparently forming a continuous part of the radial sector; it is the proximal portion of the subnodal sector of de Selys and Hagen.
Bridge cross veins: Odonata; those cross veins, one or more in number, extending between M1 + 2 and the bridge (in de Selys between principal and subnodal sectors) proximal to the oblique vein.
Brin: the fluid silk thread from each salivary gland.
Bristle: a stiff hair, usually short and blunt.
Broken: interrupted in continuity; as a line or band.
Brood: all the specimens that hatch at about one time, from eggs laid by one series of parents and which normally mature at about the same time.