Another Pogonomyrmex desertorum
worker frozen in a defensive posture, with mandibles (jaws) agape. We observed individuals remaining motionless like this for up to 10 minutes. As mentioned earlier, this heightened state of alert was due to intruding Pogonomyrmex rugosus
workers. These P. desertorum
workers were extremely docile, and did seem to be concerned at all with our presence.