Pogonomyrmex californicus (California Harvester Ant)

Pogonomyrmex californicus worker from Phoenix, Arizona. Note that the gaster on these ants is black, not red, as in many other populations of P. californicus. Like many other ants, it is a bad idea to rely just upon color when identifying ants.
Pogonomyrmex californicus worker from Phoenix, Arizona. Note that the gaster on these ants is black, not red, as in many other populations of P. californicus. Like many other ants, it is a bad idea to rely just upon color when identifying ants.