● Duval Mine Rd, Sahuarita [Pima Co], AZ USA [el. 882 m / 2893 ft] view location in Google Maps » ● 11/06/10 7:28AM sunny, air temp: 16°C / 60°F In addition to their foraging activities, Acromyrmex versicolor workers also spend a great deal of time on nest maintenance, and construction. In this image, a major worker carries a small pebble up to the top the the volcano-like nest structure. Many tunnels, galleries, and fungus-growing chambers are hidden in the subterranean portions of the nest. A tiny minor worker is seen here as well. - Pogolumina - Pogonomyrmex Harvester Ants of North America