Picture-Winged Fly (Tritoxa incurva)
Cannot find a lot of information on this fly. BugGuide says Tritoxa incurva is widespread in central and eastern North America. It is found in fields and meadows. The food of adults is said to be unknown with the suggestion that perhaps they take nectar as they are often seen in meadows with flowers. Most larvae of this fly family (Ulidiidae) are scavengers on decaying organic matter.
This particular picture-winged fly was found on our front steps and was eating carpenter bee poop.
Thanks to Ron at BugGuide for the ID
