A revision of the New World Trachusa, subgenera Ulanthidium and Trachusomimus (Hymenoptera: Megachilidae)
Published in University of Kansas Science Bulletin, in 1994, in volume 55, pages 271-297
Date published:1994
Published in University of Kansas Science Bulletin, in 1994, in volume 55, pages 271-297
Date published:1994