Nogales, Santa Cruz County, Arizona
Coordinates: 31.335383, -110.9378244
April 22, 2018
Size: 5.5 mm (to tip of wings)
A “business” of flies were flying in a shaded porch. After capturing and examining 4 specimens, I concluded they were all males. Possibly a lek.
Determined by Salvador Vitanza
Confirmed by John F. Carr