Muscidae
Nogales, Santa Cruz County, Arizona
Coordinates: 31.335286, -110.937955
Elevation: 3,932 ft
January 4, 2022
Found in the evening on an exterior southwest-facing wall. There were several other insects, mainly flies, that were warming up with the last sunrays of the day.
Determined by Salvador Vitanza
Confirmed by John F. Carr