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Army ant males are most commonly seen at night. They sometimes end up at lights as they disperse on wing from their natal colonies. This army ant, Neivamyrmex swainsonii, is a broadly-distributed species found from the southern United States to northern Argentina. Peña Blanca Lake, Arizona, USA
A raiding column of Neivamyrmex nigrescens. Huachuca Mountains, Arizona, USA
Army ant males are most commonly seen at night. They sometimes end up at lights as they disperse on wing from their natal colonies. This army ant, Neivamyrmex swainsonii, is a broadly-distributed species found from the southern United States to northern Argentina. Peña Blanca Lake, Arizona, USA
Neivamyrmex pilosus is among the more commonly encountered of the Neotropical army ants. Like most Neivamyrmex species, they are specialist predators on other ants. However, this species is unusual in its preference for arboreal (or tree-nesting) ants. I observed this colony taking Azteca, Crematogaster, and Brachymyrmex. Gamboa, Panama
Neivamyrmex opacithorax. Army ants carrying brood. Notice how the ants carry their pupae, slung under their bellies in typical army-ant style. Chiricahua Mountains, Arizona, USA
Neivamyrmex opacithorax army ant queen with a retinue of workers. Unlike most queen ants which are born with wings for dispersal and large eyes for visual navigation, army ant queens are always wingless and have greatly reduced eyes. Chiricahua Mountains, Arizona, USA
A queen Neivamyrmex opacithorax army ant surrounded by her much smaller worker offspring. Chiricahua Mountains, Arizona, USA
A queen Neivamyrmex opacithorax army ant. Her enormous abdomen houses ovaries for egg production. Queen army ants are among the most fecund of all insects, as army ant colonies may have tens or hundreds of thousands of worker ants (such as the small ant pictured riding on top) and the reproduction is the work of a single mother queen. Chiricahua Mountains, Arizona, USA
Neivamyrmex army ants prey primarily on the brood of other ant species, but they will also take adult ants. Here army ants make short work of a Lasius foundress queen they encountered in a subterranean raid. (Neivamyrmex nigrescens). Portal, Arizona, USA
Army ant males are most commonly seen at night. They sometimes end up at lights as they disperse on wing from their natal colonies. This army ant, Neivamyrmex swainsonii, is a broadly-distributed species found from the southern United States to northern Argentina.

Peña Blanca Lake, Arizona, USA
Army ant males are most commonly seen at night. They sometimes end up at lights as they disperse on wing from their natal colonies. This army ant, Neivamyrmex swainsonii, is a broadly-distributed species found from the southern United States to northern Argentina. Peña Blanca Lake, Arizona, USA
Army ant males are most commonly seen at night. They sometimes end up at lights as they disperse on wing from their natal colonies. This army ant, Neivamyrmex swainsonii, is a broadly-distributed species found from the southern United States to northern Argentina.

Peña Blanca Lake, Arizona, USA
See photo in original gallery.
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all images and text © Alex Wild 2001-2013