alternative definition added over 14 years ago by Istvan Miko
In Andrenidae, the area ventral to each antenna enclosed within the two subantennal sutures, the epistomal suture, and the ventral margin of the antennal socket.
Reference: Michener, C. D. 2000. The Bees of the World. Johns Hopkins University Press, Baltimore, MD, USA 913 pp.
Cross reference:
None provided.