● Duval Mine Rd, Sahuarita [Pima Co], AZ USA [el. 882 m / 2893 ft] view location in Google Maps » ● 11/06/10 8:01AM sunny, air temp: 18°C / 64°F The entrance to this M. pergandei nest was approximately 5 cm / 2 inches in diameter at its widest point, with a cavernous space just inside. It appeared that heavy rains may have eroded the nest structure at some point in the recent past. - Pogolumina - Pogonomyrmex Harvester Ants of North America