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.