B

bacteraemia
Bacteria in the blood
bacilluria
Having bacteria in the urine.
bacteriostatic
Preventing the growth of bacteria.
basal
(basad). An adjective (or adverb) denoting position near or movement toward the base of a body part. The base of the head or pronotum is at the posterior end while that of the abdomen or an elytron is at the anterior end; on the legs or antennae, basal and proximal are synonymous.
basale
(of tegmen). The basal portion of a sheath-like tegmen which is divided transversely. This appears to be homologous to the phallobase. Also called basal piece.
basal lamina
One of two layers that form the basement membrane, a amorphous sheet which underlies epithelial cells.
basal piece
See Basale and Phallobase.
basicosta
see humeral plate.
basitarsus
First and usually the largest segment of the tarsus
bead
A fine raised margin.
bedbug
Cimex lectularius
benthic
Pertaining to the bottom of the sea, lakes or pond.
bifid
Forked.
bilobate aedeagus
Aedeagus in which the phallobase and parameres are well developed but the penis is membranous or sclerotized only at base, where there may be a pair of anterior struts. This type is characteristic of many Scarabaeoidea.
biordinal
Of two alternating sizes.
bipectinate
Concerned mainly with the antennae - feathery like extensions projecting out from two sides of a central axis. [see picture]
biramose antenna
The presence of a single ramus on each antennomere.
biserial
In two series, often concentric.
brachelytrous
With shortened elytra.
brachyapterous
With tegmina and wings shorter than the abdomen but overlapping each other dorsally.
bostrichoid aedeagus
Aedeagus in which the phallobase broadly overlaps the parameres, and the latter are fused basally to each other and to the base of the penis; a secondary bridge may also unite the parameres. This type of aedeagus is found in most Bostrichoidea.
buccal
Pertaining to the mouth.
bulb
Rounded expansion of an organ.
bulla
A blister or blister-like structure.
buprestoid aedeagus
Aedeagus in which the phallobase is more or less reduced and often fused to the parameres, which form a tube surrounding the penis; the entire structure is usually somewhat flattened. This type occurs only in Buprestidae.
bursa coplatrix
The vaginal pouch of insects; the genital chamber.
byssoid
To consist of fine threads.