Trechini
Guides
Ameroduvalius
Ameroduvalius is a monotypic genus of ground beetles in the family Carabidae, containing a single described species, Ameroduvalius jeanneli. The genus was established by Valentine in 1952 and is classified within the tribe Trechini, subfamily Trechinae. These beetles belong to the diverse lineage of small carabids often associated with subterranean or specialized microhabitats.
Ameroduvalius jeanneli
Ameroduvalius jeanneli is a small ground beetle in the family Carabidae, described by Valentine in 1952. The genus Ameroduvalius belongs to the tribe Trechini, a group of small carabid beetles often associated with subterranean or cryptic habitats. Records indicate this species occurs in the United States.
Blemus discus
Discus Riverbank Ground Beetle
Blemus discus is a ground beetle species in the genus Blemus, family Carabidae. It has been recorded across parts of North America and Eurasia. The species belongs to the tribe Trechini, a group of small carabid beetles often associated with riparian and moist habitats. The specific epithet "discus" refers to the disc-like body shape characteristic of this species.
Darlingtonea
Darlingtonea is a monotypic genus of cave-dwelling ground beetles (Carabidae) containing a single species, D. kentuckensis. This trechine beetle is endemic to eastern Kentucky's karst cave systems, where it functions as a top terrestrial predator specialized for high-humidity subterranean environments. The genus exhibits extreme physiological specialization, with narrow humidity tolerance identified as a critical vulnerability to climate change.
Nelsonites
Nelsonites is a genus of ground beetles in the family Carabidae, established by Valentine in 1952. The genus contains two described species: Nelsonites jonesei and Nelsonites walteri. Both species are known from the United States. The genus belongs to the tribe Trechini within the subfamily Trechinae.
Pseudanophthalmus
Pseudanophthalmus is a genus of small carabid beetles comprising over 200 described species, all obligate cave dwellers restricted to karst regions of the eastern United States. Species exhibit extreme short-range endemism, often confined to single caves or cave systems. The genus forms part of the Trechoblemus complex within the tribe Trechini. Many species are rare or potentially extinct due to habitat restriction and anthropogenic threats.
Tachys columbiensis
Tachys columbiensis is a species of ground beetle in the family Carabidae, described by Hayward in 1900. It belongs to the genus Tachys, a diverse group of small, fast-running beetles commonly known as 'tachys' or 'minute ground beetles.' The genus is characterized by tiny body size and rapid movement. Records indicate presence in the United States and North America.
Trechoblemus westcotti
Trechoblemus westcotti is a species of ground beetle in the family Carabidae, described by Barr in 1972. It belongs to the genus Trechoblemus, which is part of the tribe Trechini within the subfamily Trechinae. The species is known from the United States and is named in honor of Richard L. Westcott, an entomologist known for his work on Buprestidae and other beetle groups.
Xenotrechus
Xenotrechus is a genus of ground beetles (Carabidae) described by Barr & Krekeler in 1967. It contains two described species: X. condei and X. denticollis. The genus belongs to the tribe Trechini within the subfamily Trechinae, placing it among the small, often eyeless or reduced-eyed beetles adapted to subterranean or specialized habitats.