Western harvester ants (Pogonomyrmex occidentalis) make distinctive mound nests on the desert floor. Hallelujah Junction, California, USA
Pogonomyrmex maricopa, purportedly the animal with the most venomous sting in North America. Tucson, Arizona, USA
Pheidole xerophila is a common small seed harvester in the deserts of the American southwest. Here are major and minor workers along a foraging trail. Mojave National Preserve, California, USA
