Adoxomyia tenuicornis
Rio Rico, Santa Cruz County, Arizona
Coordinates: 31.468040, -110.974227
Elevation: 3,453 ft
May 12, 2017
Size: 9 mm (to wing tips)
Attracted to mercury vapor and ultraviolet lights
Determined by Dr. Norm Woodley who said: “I think your fly is Adoxomyia tenuicornis James. The antennae seem a little darker than described, but James had only a few specimens and this sort of coloration tends to be variable.”