I had seen one of these flies last summer and wished I had a chance to photograph it, and I haven't seen another one until today.
Take a look at the larger size, it's really a beautiful fly. Through the viewfinder I watched him make several bizarre movements with his front legs, totally different than any other fly I have seen.
Taken using just the 28mm reversed and the flash to the top left. He was on a white painted railing which bounced the flash back up and provided some nice lighting. Full frame, no cropping.