Atta mexicana (Leaf-cutter ants)

Atta mexicana nest at the base of a saguaro. Their nests are very different from those of Acromyrmex versicolor, a more common Arizona leafcutter ant.
Atta mexicana nest at the base of a saguaro. Their nests are very different from those of Acromyrmex versicolor, a more common Arizona leafcutter ant.