Atta mexicana
Nogales
Santa Cruz County, Arizona
Coordinates: 31.335339, -110.947583
Elevation: 3,998 ft
October 18, 2023
Size: 7 mm
Found a long line of these ants between a sidewalk and a paved road (W Crawford St)
only a small percentage (2%?) were carrying leaf pieces
Determined by Salvador Vitanza
Confirmed by James C. Trager