Pogonomyrmex rugosus

    

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Horned lizards are major predators of ants. This desert horned lizard sat next to a Pogonomyrmex rugosus foraging trail for about 45 minutes, eating 40-50 ants.
Horned lizards are major predators of ants. This desert horned lizard sat next to a Pogonomyrmex rugosus foraging trail for about 45 minutes, eating 40-50 ants.
The seed coats of fillaree have corkscrew shape. When humidity changes, the tightness of the corkscrew also changes, helping to screw the seeds into the soil. At certain times of year it is common to find Harvester Ants that have been trapped in the coils of the fillaree seeds, as in this photo.
The seed coats of fillaree have corkscrew shape. When humidity changes, the tightness of the corkscrew also changes, helping to screw the seeds into the soil. At certain times of year it is common to find Harvester Ants that have been trapped in the coils of the fillaree seeds, as in this photo.
The Harvester Ant sexuals are very vulnerable during their mating flights. Here a male Pogonomyrmex rugosus is eaten by a crab spider.
The Harvester Ant sexuals are very vulnerable during their mating flights. Here a male Pogonomyrmex rugosus is eaten by a crab spider.
Male Pogonomyrmex rugosus, on my fingers for scale. The males from many nests emerge at about the same time, gathering at certain locations and flying around. This one was part of a clould of males congragating around a creosote bush. The males emit a pheromone that attracts females to them.
Male Pogonomyrmex rugosus, on my fingers for scale. The males from many nests emerge at about the same time, gathering at certain locations and flying around. This one was part of a clould of males congragating around a creosote bush. The males emit a pheromone that attracts females to them.
Winged male Pogonomyrmex rugosus. The males from many nests emerge at about the same time, gathering at certain locations and flying around. This one was part of a clould of males congragating around a creosote bush. The males emit a pheromone that attracts females to them.
Winged male Pogonomyrmex rugosus. The males from many nests emerge at about the same time, gathering at certain locations and flying around. This one was part of a clould of males congragating around a creosote bush. The males emit a pheromone that attracts females to them.
Typical view of a Pogonomyrmex nest. The nest entrance is surrounded by a cleared gravel/clay area with a diameter of about three feet.
Typical view of a Pogonomyrmex nest. The nest entrance is surrounded by a cleared gravel/clay area with a diameter of about three feet.
Pogonomyrmex rugosus worker
Pogonomyrmex rugosus worker
Pogonomyrmex rugosus worker
Pogonomyrmex rugosus worker
Pogonomyrmex rugosus worker. If you look closely at the right-hand corner of her head, you can see a big dent in it. It is not unusual to see this, which makes me think that being a Harvester Ant must be a pretty rough life.
Pogonomyrmex rugosus worker. If you look closely at the right-hand corner of her head, you can see a big dent in it. It is not unusual to see this, which makes me think that being a Harvester Ant must be a pretty rough life.