Western harvester ants (Pogonomyrmex occidentalis) make distinctive mound nests on the desert floor. Hallelujah Junction, California, USA
A nest of harvester ants comes to life at dusk in urban Tucson. Pogonomyrmex rugosus. Tucson, Arizona, USA
A nest of the red harvester ant Pogonomyrmex barbatus. Notice the foraging trail leading away from the nest. Nogales, Mexico
