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Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food. Wisconsin, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food. Wisconsin, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food. Wisconsin, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food. Wisconsin, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food. Wisconsin, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food. Wisconsin, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food. This behavior does more than merely transfer food. Ants also use it to pass chemical signals among each other, and research has shown that trophallaxis helps the colony maintain a cohesive identifying odor. Wisconsin, USA
The intricate galleries in this underground nest of Lasius umbratus are made possible by a fungus that grows within a matrix of wood pulp sculpted by the ants. Vermillion River Observatory, Illinois, USA
The intricate galleries in this underground nest of Lasius umbratus ants are made possible by a fungus that grows within a matrix of wood pulp sculpted by the ants. Vermillion River Observatory, Illinois, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food.

Wisconsin, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food. Wisconsin, USA
Formica obscuripes nestmate workers engaging in trophallaxis, or the social sharing of liquid food.

Wisconsin, USA
See photo in original gallery.
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all images and text © Alex Wild 2001-2013