Picture-winged Fly

I think this is some kind of flying ant, anyone have an ID? As you can see by the size of the hairs on the plant leaves, this insect was pretty small. Maybe a centimeter wingtip to wingtip. Unfortunately I had the F-stop set wrong and couldn't get a good shot of his head. But his wings are certainly interesting!

Ah ha! He's a signal fly; specifically a picture-winged fly. Nice name... for a fly! :) (http://www.cirrusimage.com/flies_signal.htm)