Posted by John Carr on 20-07-2013 23:10
#4
The white projection is the halter.
Few people know how to identify American Drosophilidae. I don't, except for three distinctive species groups, and this isn't one of them. Black projection on front of wing =
Mycodrosophila, small brown spots on thorax =
Drosophila repleta group, and "sex comb" on male front tibia =
Sophophora.