Crematogaster acrobat ants use their stingers in defense, but they don't pierce the integument of their opponents. Rather, the stinger serves as a brush for smearing defensive chemicals on their adversaries. Here, a worker defends a food bait against an intruding Pheidole.

Kibale forest, Uganda
Pheidole minor workers spread-eagle a Tetramorium (aculeatum - group) forager that has strayed into their territory.

Kibale forest, Uganda
Pheidole minor workers spread-eagle a Tetramorium (aculeatum - group) forager that has strayed into their territory.

Kibale forest, Uganda
A Crematogaster acrobat ant deters a Pheidole worker.

Kibale forest, Uganda
Crematogaster acrobat ants use their stingers in defense, but they don't pierce the integument of their opponents. Rather, the stinger serves as a brush for smearing defensive chemicals on their adversaries. Here, a worker defends a food bait against an intruding Pheidole.

Kibale forest, Uganda
Pheidole minor workers spread-eagle a Tetramorium (aculeatum - group) forager that has strayed into their territory.

Kibale forest, Uganda
Camponotus textor workers from different colonies fight at a territorial boundary.

Icononzo, Tolima, Colombia
Linepithema iniquum workers from different colonies fighting.

Morretes, Paraná, Brazil
Linepithema iniquum from different nests, fighting. Myrmecologists can sometimes measure the territory of an an colony by testing the aggression of ants collected at different distances.

Morretes, Paraná, Brazil
Crematogaster acrobat ants use their stingers in defense, but they don't pierce the integument of their opponents. Rather, the stinger serves as a brush for smearing defensive chemicals on their adversaries. Here, a worker defends a food bait against an intruding Pheidole.

Kibale forest, Uganda
Crematogaster acrobat ants use their stingers in defense, but they don't pierce the integument of their opponents. Rather, the stinger serves as a brush for smearing defensive chemicals on their adversaries. Here, a worker defends a food bait against an intruding Pheidole.

Kibale forest, Uganda
Crematogaster acrobat ants use their stingers in defense, but they don't pierce the integument of their opponents. Rather, the stinger serves as a brush for smearing defensive chemicals on their adversaries. Here, a worker defends a food bait against an intruding Pheidole.

Kibale forest, Uganda
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all images and text © Alex Wild 2001-2013