Nomadic
Guides
Dolichoderus
Dolichoderus is a genus of ants comprising 181 valid species (131 extant, 50 extinct), representing the sole member of tribe Dolichoderini and type genus of subfamily Dolichoderinae. Workers are small (approximately 4 mm), possess a thick sculptured integument, and lack a functional sting. The genus exhibits remarkable ecological diversity: most species are generalist honeydew collectors that tend aphids and scale insects, while the D. cuspidatus group in Southeast Asia practices unique nomadic aphid farming with obligate mutualist mealybugs. The genus has an extensive fossil record in Baltic amber.
Neivamyrmex
Legionary Ants
Neivamyrmex is a genus of New World army ants comprising approximately 129 species. Colonies are nomadic, establishing temporary bivouacs nightly rather than constructing permanent nests. Most species are predominantly subterranean, with occasional surface foraging at night or during overcast conditions. The genus is distinguished from related army ants by workers lacking a subapical tooth on the tarsal claw.
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 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.