Myrmecocystus mexicanus. Honeypot ants have an unusual food storage system. Some members of each colony act as living receptacles known as "repletes", these ants become engorged with food and hang from the ceilings of chambers deep underground. Captive colony at the California Academy of Sciences
Army ant colonies typically contain workers of many sizes, each specialized for a different task. Here a Nomamyrmex esenbeckii worker stands guard over a passing column. Gamboa, Panama
Notoncus gilberti nocturnal forager resting on a Eucalyptus trunk. Poochera, South Australia
