Legionary-ant
Guides
Neivamyrmex harrisii
Harris' Legionary Ant
Neivamyrmex harrisii is a species of legionary ant in the family Formicidae. Like other members of the genus Neivamyrmex, it is a nomadic, mostly nocturnal ant that raids the nests of other ant species to prey on larvae and pupae. The species is part of a group of ants that includes army ants, characterized by their raiding behavior and lack of permanent nests. Colonies are known to be sedentary during winter months.
Neivamyrmex kiowapache
Neivamyrmex kiowapache is a species of legionary ant in the subfamily Dorylinae, described by Snelling & Snelling in 2007. As a member of the genus Neivamyrmex, it belongs to a group of nomadic army ants that conduct nocturnal raids on other ant nests to prey on larvae and pupae. The species is known from extremely limited observational records, with only three observations documented in iNaturalist as of the knowledge cutoff.
Neivamyrmex mandibularis
legionary ant
Neivamyrmex mandibularis is a species of legionary ant in the subfamily Dorylinae. Like other Neivamyrmex species, it is nomadic and primarily nocturnal, raiding nests of other ant species to prey on larvae and pupae. The species is part of a genus containing the only army ants native to North America north of Mexico. Workers are subterranean and rarely observed by the general public, while winged reproductive males are occasionally attracted to lights at night.
Neivamyrmex melshaemeri
Legionary ant
Neivamyrmex melshaemeri is a species of legionary ant in the genus Neivamyrmex, which comprises nomadic army ants found primarily in North America. Like other members of this genus, it exhibits specialized predatory behavior and social parasitism of other ant colonies. The species was described by Haldeman in 1852 and represents part of a distinctive radiation of New World army ants.
Neivamyrmex nigrescens
Black Legionary Ant
Neivamyrmex nigrescens is a North American army ant and the most widely distributed species in its genus across the United States. Colonies are nomadic and primarily nocturnal, conducting raids on other ant nests to prey on larvae and pupae. The species has been extensively studied due to its broad range, making it one of the best-known Neivamyrmex species. Colony relocation events have been observed during morning hours in cooler seasons, contrasting with strictly nocturnal emigrations in summer.
Neivamyrmex opacithorax
army ant
Neivamyrmex opacithorax is a species of army ant in the family Formicidae. It is one of two army ant species documented in Missouri, where it has been observed in dolomite glades. The species is strictly nocturnal during summer months but has been observed on the surface during cool, overcast fall days. Like other legionary ants, it exhibits nomadic behavior and raids nests of other ant species.
Neivamyrmex swainsonii
Swainson's Legionary Ant
Neivamyrmex swainsonii is a species of legionary ant in the family Formicidae, native to South America. It belongs to the genus Neivamyrmex, which comprises nomadic army ants known for raiding the nests of other ant species. The species exhibits the typical legionary ant lifestyle: colonies are nomadic during active periods, with workers foraging nocturnally in groups to prey on larvae and pupae of other ants. Like other Neivamyrmex species, N. swainsonii is associated with specialized myrmecophilous beetles, particularly clown beetles in the subfamily Hetaeriinae that live as guests within ant colonies.