(syn. Lalage Ϯ Long-tailed Triller L. leucopyga) Gr. διαφορος diaphoros  different  < διαφορεω diaphoreō  to disperse  < διαφερω diapherō  to carry across; πτερον pteron  wing; "The genus Symmorphus Gould [1837] is preoccupied in Hymenoptera by Symmorphus Wesmaël [1833], and may be replaced by Diaphoropterus (διαφορος, differens, and πτερον, ala), its type being Symmorphus leucopygus Gould." (Oberholser 1899).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2019). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2019). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 16 January 2019).