downing wrote:
The fly looks like a Tritoxa incurva to me. I did some work with them some time ago. Note: on Bugguide there seem to be two wing patterns associated with this fly. I don't know if one is in error or if there are two varieties.
The images I'm seeing of Tritoxa incurva on BugGuide all have white lines that completely cross the wing. I didn't find the other pattern you saw. My fly has kind of triangular white patterns that seem to point in form the wing edge. Is that the other pattern you saw?