John Bernhard Smith

Explanation of Terms Used in Entomology John Bernhard Smith

A A: prefix, is privative; wanting or without. Ab: off; away from. Abbreviated: cut short; not of usual length. Abdomen: the third or posterior division of the insect body: consists normally of nine or ten apparent segments, but actual number is a mooted question: bears no functional legs in the adult stage. Abdominal: belonging or pertaining to the abdomen. Abdominal feet: see pro-legs. Abdominal groove: the concave lobe of the inner margin of secondaries enveloping the abdomen beneath, in some butterflies. Abdominal pouch: in female Parnassiids, a sac-like ventral cavity, formed by material secreted during copulation. Abductor: applied to muscles that open out or extend an appendage or draw it away from the body: see adductor. Abductor mandibulae: the muscle that opens the mandibles. Aberrant: unusual; out of the ordinary course.