Pogonomyrmex rugosus (Rough Harvester Ant)

Pogonomyrmex rugosus worker picking up a large pebble. She is going to use this pebble to seal her nest entrance. Many ants seal their nest entrances before entering periods of inactivity, presumably to better keep out predators and parasites.
Pogonomyrmex rugosus worker picking up a large pebble. She is going to use this pebble to seal her nest entrance. Many ants seal their nest entrances before entering periods of inactivity, presumably to better keep out predators and parasites.