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Synoeca cyanea, a South American social wasp in the family Vespidae, constructs distinctive mud nests. Morretes, Paraná, Brazil
After a heavy rain, a Synoeca cyanea worker empties extra water from the colony's nest. Morretes, Paraná, Brazil
Synoeca cyanea, a South American social wasp in the family Vespidae, constructs distinctive mud nests. Morretes, Paraná, Brazil
A queen Atta texana Texas leafcutter ant sits amid her much smaller daughters in the fungus garden. Laboratory colony at the University of Illinois at Urbana-Champaign
Major and minor workers of the turtle ant Cephalotes pusillus engage in trophallaxis food-sharing behavior. Carrancas, Minas Gerais, Brazil
Pheidole vafra minor workers cooperate to carry a piece of cookie I used to bait them out of their nest. Morretes, Paraná, Brazil
Nomamyrmex esenbeckii Monte Verde, Minas Gerais, Brazil
Nomamyrmex esenbeckii workers carrying a massive Pheidole pupa they have taken in a successful raid. Monte Verde, Minas Gerais, Brazil
Socially parasitic ants are usually discernable by their relatively small queens, as ants that start new colonies by infiltrating existing nests do not need large body reserves. The queen of Aphaenogaster tennesseensis- a temporary nest-founding parasite of several other woodland Aphaenogaster- is scarcely larger than her own workers. Urbana, Illinois, USA
A queen Atta texana Texas leafcutter ant sits amid her much smaller daughters in the fungus garden.

Laboratory colony at the University of Illinois at Urbana-Champaign
A queen Atta texana Texas leafcutter ant sits amid her much smaller daughters in the fungus garden. Laboratory colony at the University of Illinois at Urbana-Champaign
A queen Atta texana Texas leafcutter ant sits amid her much smaller daughters in the fungus garden.

Laboratory colony at the University of Illinois at Urbana-Champaign
See photo in original gallery.
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all images and text © Alex Wild 2001-2013