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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
Nomamyrmex army ants are among the few animals that successfully attack leafcutter ant nests. The leafcutters are not without their defenses. Here two Atta workers attack and kill a Nomamyrmex esenbeckii scout, preventing the army ants from discovering the leafcutter's trail. Gamboa, Panama
Nomamyrmex esenbeckii, carrying a larva. The bright red color indicates a relatively young age for this worker. Gamboa, Panama. filename: Nomamyrmex1
Nomamyrmex esenbeckii Gamboa, Panama
The busy nest entrance of Atta colombica, a forest-dwelling leafcutter ant. Gamboa, Panama
Cecropia trees are common along forest edges and gaps. They are guarded by aggressive Azteca ants. Gamboa, Panama
The swollen thorns of this Panamanian Acacia tree house a colony of fierce Pseudomyrmex spinicola ants. Chiriqui, Panama
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
Ectatomma ruidum Gamboa, Panama
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
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
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
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all images and text © Alex Wild 2001-2013