Because army ants live in such large numbers, they are adapted for nomadic living. Unusual Ant Species One Amazon species ( Allomerus decemarticulatus ) cooperatively builds extensive traps from plant fiber. As the colony travels, the growing larvae are carried along by the workers. Army ants may prey on reptiles, birds, or even small mammals. They are mostly found in hot, humid, tropical regions such as the forests of Central and South America, Africa and some Asian countries. This is a sub-species of the main ant family, Formicidae and in turn, has at least 150 sub-species, located in different countries around the globe. Army ants are also known as legionary ants or driver ants. While ants are ubiquitous, army ants only exist in hot and humid environments. Habits of the African driver ant (Dorylus) are similar.
Periodically, the colony rests for several days while the queen lays her eggs. Instead of living in one overstuffed nest, they travel throughout the habitat, swarming on whatever prey they come across, such as roaches, crickets, scorpions, tarantulas, snakes and birds. The army ants of tropical America (Eciton), for example, travel in columns, eating insects and other invertebrates along the way.