● Catalina State Park, Tucson [Pima Co], AZ USA [el. 800 m / 2625 ft] view location in Google Maps » ● 11/02/10 9:39AM sunny, air temp: 24°C / 76°F The sharp, and powerful mandibles of this Acromyrmex versicolor worker can be seen clearly in this image. These cutting and grasping tools allow the ants to efficiently remove large amounts of vegetation from a wide variety of plants. The freshly cut plant material is then brought back to the nest where it serves as a medium for the growth of a nutritious, symbiotic fungus. - Pogolumina - Pogonomyrmex Harvester Ants of North America