Army ant colonies are worth close attention, as they are full of fascinating and poorly studied associates. Here, an ant-mimicking rove beetle runs in a nighttime raiding column in the Ecuadorian cloud forest. The mimicry is likely intended to fool the beetle's predators rather than the army ants, which have poor vision. Mindo, Pichincha, Ecuador.
Neivamyrmex army ants are specialist predators of the brood of other ant species. Here, N. californicus raid the brood nest of the pavement ant Tetramorium immigrans. California, 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
