Atta mexicana
Nogales, Santa Cruz County, Arizona
Coordinates: 31.335946, -110.966305
Elevation: 4,044 ft
July 15, 2019
Size: 24 mm body, 37 mm to tip of wings
On the American side, in close proximity to the border with Mexico
A day after light rains
Determined by Salvador Vitanza
Confirmed by Steven Wang