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A mass of fighting Tetramorium pavement ants along a territorial boundary turns the sand black with bodies. Clinton Lake State Recreation Area, Illinois, USA
Pogonomyrmex maricopa and Aphaenogaster albisetosa workers, fighting. Resources are scarce in the desert and competition among ants is fierce, leading to frequent conflicts. Green Valley, Arizona, USA
Odontomachus chelifer. Ants from different colonies don't normally tolerate each other. Here, a trap-jaw ant dispatches an intruder from a neighboring nest. Aragua, Venezuela
Pogonomyrmex maricopa and Aphaenogaster albisetosa workers, fighting. Resources are scarce in the desert and competition among ants is fierce, leading to frequent conflicts. Green Valley, Arizona, USA
Azteca alfari Cecropia ants guard their tree zealously against intruders. Working together, they surround and immobilize their opponents such as this trap-jaw ant by pinning down their appendages. Gamboa, Panama
Azteca alfari Cecropia ants do not tolerate other species on their host tree. When intruders are encountered, the Azteca patrollers work together to pin them down. Interestingly, the offending insects aren't always killed. This Camponotus was simply dragged to the edge of the plant and dropped. Gamboa, Panama
Pogonomyrmex maricopa and Aphaenogaster albisetosa workers, fighting. Resources are scarce in the desert and competition among ants is fierce, leading to frequent conflicts. Green Valley, Arizona, USA
Pogonomyrmex maricopa and Aphaenogaster albisetosa workers, fighting. Resources are scarce in the desert and competition among ants is fierce, leading to frequent conflicts. Green Valley, Arizona, USA
Odontomachus chelifer. Ants from different colonies don't normally tolerate each other. Here, a trap-jaw ant dispatches an intruder from a neighboring nest. Aragua, Venezuela
Azteca alfari Cecropia ants do not tolerate other species on their host tree. When intruders are encountered, the Azteca patrollers work together to pin them down. Interestingly, the offending insects aren't always killed. This Camponotus was simply dragged to the edge of the plant and dropped.

Gamboa, Panama
Azteca alfari Cecropia ants do not tolerate other species on their host tree. When intruders are encountered, the Azteca patrollers work together to pin them down. Interestingly, the offending insects aren't always killed. This Camponotus was simply dragged to the edge of the plant and dropped. Gamboa, Panama
Azteca alfari Cecropia ants do not tolerate other species on their host tree. When intruders are encountered, the Azteca patrollers work together to pin them down. Interestingly, the offending insects aren't always killed. This Camponotus was simply dragged to the edge of the plant and dropped.

Gamboa, Panama
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all images and text © Alex Wild 2001-2013