Seed-harvesting
Guides
Pogonomyrmecini
Pogonomyrmecini is a tribe of myrmicine ants established in 2015, containing three extant genera: Pogonomyrmex, Hylomyrma, and Patagonomyrmex. The tribe was erected following phylogenetic revision of the subfamily Myrmicinae. Members include the well-known harvester ants (Pogonomyrmex), which are conspicuous seed-collecting ants in arid regions of the Americas. The tribe represents a relatively recent taxonomic reorganization based on molecular and morphological evidence.
Pogonomyrmex californicus
California harvester ant
Pogonomyrmex californicus is a seed-harvesting ant native to southwestern North America. It is the most widely distributed species in the genus Pogonomyrmex. The species exhibits a striking social polymorphism: most populations have single-queen colonies (monogyny), but some California populations show primary polygyny where multiple unrelated queens cooperate in colony founding and coexist in mature colonies. It possesses a powerful sting and has been used historically by Indigenous peoples for ritual and medicinal purposes. The species is a prominent model for studying the evolution of social behavior, cooperation, and epigenetic regulation of aggression.
Pogonomyrmex huachucanus
Huachuca Harvester Ant
Pogonomyrmex huachucanus is a species of harvester ant in the genus Pogonomyrmex, first described by Wheeler in 1914. The species is known from the Huachuca Mountains region of southeastern Arizona, from which its specific epithet derives. Like other members of the genus, it is a seed-harvesting ant that constructs conspicuous nest clearings in arid environments. As with most Pogonomyrmex species, it likely possesses a functional sting used in colony defense.
Pogonomyrmex occidentalis
western harvester ant
Pogonomyrmex occidentalis, the western harvester ant, is a seed-collecting ant native to arid regions of the American West. Colonies construct conspicuous gravel mounds up to 89 cm in diameter, surrounded by vegetation-free nest disks that serve as "islands of fertility" where plants thrive along nest rims. The species possesses a painful, venomous sting used defensively, and plays documented roles as a keystone species in desert ecosystems through soil modification, seed dispersal, and as prey for specialized predators.
Pogonomyrmex pima
Pima-group Harvester Ants
Pogonomyrmex pima is a seed-harvesting ant in the genus Pogonomyrmex, described by Wheeler in 1909. As a member of the harvester ant group, it belongs to a lineage known for constructing large nest clearings, collecting and storing seeds, and possessing potent defensive stings. The species is part of the Pima species group within the genus, which is distributed across arid regions of North America. Like other Pogonomyrmex species, P. pima likely plays significant ecological roles in seed dispersal, soil nutrient cycling, and as a food source for specialized predators.
Veromessor
Veromessor Harvester Ants
Veromessor is a genus of North American harvester ants comprising ten species, all endemic to western and central North America. The genus was revived from synonymy with Messor by Ward et al. (2015). These ants exhibit striking ecological and morphological diversity despite the small number of species, including variation in colony size, foraging strategies, mating phenology, and colony founding modes. They serve as important ecological models, with some species studied extensively for their navigation systems and social behavior.