Stenammini
Guides
Aphaenogaster
Funnel Ants, Collared Ants
Aphaenogaster is a genus of myrmicine ants comprising approximately 200 described species, including 18 fossil species. Workers are monomorphic with 12-segmented antennae and four-segmented antennal clubs. The genus exhibits diverse nesting habits, with most species nesting in soil, under rocks, or in rotten wood, while some species such as A. mariae are arboreal. Australian species are known for constructing conspicuous funnel-shaped nest entrances up to 4 cm in diameter.
Aphaenogaster texana
Texas Collared Ant
Aphaenogaster texana is a species of ant in the family Formicidae, commonly known as the Texas Collared Ant. It belongs to the genus Aphaenogaster, a diverse group of ants often referred to as spine-waisted ants due to their distinctive petiole structure. The species was described by Wheeler in 1906 and includes two recognized subspecies: A. t. texana and A. t. carolinensis.
Aphaenogaster treatae
Treat's Collared Ant
Aphaenogaster treatae, commonly known as Treat's Collared Ant, is a species of ant in the genus Aphaenogaster. Described by Forel in 1886, this species belongs to the tribe Stenammini within the subfamily Myrmicinae. The species has been documented through 188 iNaturalist observations, indicating it is a recognized though not extensively studied member of the eastern temperate forest ant fauna. As with many Aphaenogaster species, it is likely a ground-nesting ant, though specific natural history details remain poorly documented in the available literature.
Aphaenogaster umphreyi
Aphaenogaster umphreyi is a rarely collected ant species in the genus Aphaenogaster, described in 1998 from Florida. The species belongs to a genus predominantly consisting of ground-nesting species in eastern temperate forests. Like its congener A. mariae, it may exhibit arboreal nesting habits, though this has not been confirmed. The species remains poorly known due to limited collection records.
Stenamma
cryptic leaf-litter ants
Stenamma is a genus of cryptic ants in the family Formicidae, subfamily Myrmicinae. The genus was long thought to be restricted to temperate regions, but extensive Neotropical collections have revealed a major radiation in Middle America with 40 recognized species, 33 of them newly described. Species are notably adapted to cool, wet environments at mid to high elevations, where they can become the dominant ant genus in leaf-litter samples—contrary to the typical ant pattern of decreasing diversity with elevation.