Nogales, Santa Cruz County, Arizona
Coordinates: 31.335400, -110.938283
Elevation: 3,931 ft
March 22, 2020
Size: 3.5 mm (to tip of wings)
Found two of these flies on an Opuntia cactus
Determined by Salvador Vitanza
Confirmed by John F. Carr
FAMILY MILICHIIDAE (Freeloader Flies)