Key to the Families of Diptera Associated with Cow Dung

Couplet 24

Either:	Or:
24a.   Wing with anal cell (cup) projected posteriorly as acute angular extension	24a'.   Wing with anal cell (cup) rounded or truncate posteriorly
24b.   Thorax colour largely metallic blue-green	24b'.   Thorax colour variable, not metallic blue-green
Otitidae	Go to 25

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