Diptera Associated with Livestock Dung

Key to the Families of Diptera Associated with Cow Dung

Couplet 21

Either:	Or:
21.   Wing with anal veins A1 and A2 intersecting or nearly intersecting; Sc nearly straight on apical two thirds	21'.   Wing with anal veins A1 and A2 nearly parallel or diverging; Sc distinctly curved forward on apical half or less
Fanniidae	Muscidae

First published on the Internet in 2000 by J.M. Cumming
Last updated 18 May 2006 by J.M. Cumming and G.D. Murray