The abbreviated names are:

Comst., for Comstock ; Coq., for Coquillett;
Meig., for Meigen ; Nort., for Norton:
O. S., for Osten-Sacken: and Will. for Williston.

[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.