Mound-building
Guides
Formica dakotensis
dakotensis-group Mound Ants
Formica dakotensis is a mound-building ant species in the genus Formica, native to North America. A four-year field study in Quebec documented stable populations with mean colony densities of approximately 172 colonies per hectare in spruce bog habitats. The species exhibits annual colony turnover rates around 18-24%, with colony longevity estimated from continuous nest occupation patterns. Its nest-building behavior has been hypothesized as a potential evolutionary step toward polycalism in the genus.
Formica exsectoides
Allegheny mound ant
Formica exsectoides, commonly known as the Allegheny mound ant, is a large black ant species native to eastern North America. It constructs conspicuous dome-shaped mounds that can reach several feet in diameter and over two feet in height, with colonies containing hundreds of thousands of workers and multiple reproductive queens. The species is notable for its aggressive territorial defense, mechanical strength (neck joints withstand pressures up to 5,000 times body weight), and complex ecological relationships including associations with treehoppers and use of its mounds by other animals.
Formica integra
integra-group Field and Mound Ants
Formica integra is a mound-building ant species in the genus Formica, characterized by its polygynous colony structure with multiple queens coexisting within a single nest. The species inhabits open, sunny environments and constructs distinctive above-ground nest mounds in well-drained soils. It has been studied for its nest construction behavior, trophallaxis (food exchange between individuals), and interspecific confrontation behaviors.
Lasius minutus
Mound-building Swamp Ant
Lasius minutus is a species of ant in the genus Lasius, commonly known as the Mound-building Swamp Ant. It is a small formicine ant that constructs mounds in wetland habitats. The species has been studied using radioactive phosphorus tracing to understand colony distribution and spatial organization. It belongs to a genus known for citronella-scented defensive compounds and aphid-tending behaviors, though species-specific traits for L. minutus require direct observation.