PJ Fly - Zelia vertebrata
Petit Jean State Park, Seven Hollows Trail, Conway County, Arkansas, USA
September 26, 2005
Very unusual flies. There were several on a pine trunk. And they were making flight loops out and landing head down on the trunk over and over. Very similar to some large flies that fell out of the treetops in a mini-battle in the same area this summer. They may be Tachinid flies but the tapering abdomen is odd and these are very long-legged flies. I still, unfortunately, have a large vacuum of Tachinid info to fill.