Carabidae
Guides
Tachys austinicus
Tachys austinicus is a small ground beetle in the family Carabidae, first described by Casey in 1918. It belongs to the large genus Tachys, which comprises numerous diminutive carabid beetles often associated with moist habitats. The species was originally described under the genus Paratachys, which is now treated as a subgenus of Tachys. Like other members of this genus, it is likely to be found in leaf litter, soil, and other ground-level microhabitats, though specific ecological details for this species remain poorly documented.
Tachys bradycellinus
Tachys bradycellinus is a species of ground beetle in the family Carabidae, described by Hayward in 1900. The genus Tachys comprises small, fast-running beetles often found in moist microhabitats. Records indicate this species occurs in the United States and North America. Like other members of the genus, it is likely associated with riparian or wetland edges where it preys on small invertebrates.
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.
Tachys corax
Tachys corax is a species of ground beetle in the family Carabidae. It is a small beetle species distributed across North America, with records from both Canada and the United States. Like other members of the genus Tachys, it belongs to a group of minute carabid beetles often associated with riparian and moist habitats. The species was described by John Lawrence LeConte in 1852.
Tachys edax
Tachys edax is a species of ground beetle in the family Carabidae, first described by LeConte in 1852. It belongs to the genus Tachys, a group of small, fast-running beetles commonly known as tiger beetles or ground beetles. The species is recorded from North America, specifically Canada and the United States. Like other members of Carabidae, it is likely a predatory beetle, though specific ecological details for this species remain poorly documented.
Tachys halophilus
Tachys halophilus is a species of ground beetle in the family Carabidae, described by Lindroth in 1966. The genus Tachys comprises small, fast-moving beetles often associated with moist or saline habitats. The specific epithet 'halophilus' suggests an affinity for salt-tolerant environments. The species has been recorded in Canada and the United States.
Tachys mordax
Tachys mordax is a small ground beetle in the family Carabidae, described by John Lawrence LeConte in 1852. The genus Tachys comprises diminutive, fast-running beetles commonly known as 'tiger beetles' or ground beetles, though Tachys species are typically smaller and less conspicuous than the classic tiger beetles of genus Cicindela. Like other members of its genus, T. mordax is likely adapted to open, sandy or disturbed habitats where it actively pursues small invertebrate prey. The species is recorded from the United States and is part of the diverse North American carabid fauna, though specific ecological details remain poorly documented in published literature.
Tachys pallidus
Tachys pallidus is a small ground beetle in the family Carabidae, subfamily Trechinae. The species is documented from North America, with observation records from the United States. Like other members of the genus Tachys, it likely inhabits moist ground-level microhabitats. Taxonomic authority has been attributed to both Chaudoir (1868) and Reitter (1884), with the former currently accepted.
Tachys potomaca
Tachys potomaca is a species of ground beetle in the family Carabidae, described by Erwin in 1981. It belongs to the tribe Bembidiini within the subfamily Trechinae. The species has been recorded in the United States, with distribution data indicating presence in North America. It was originally described under the genus Paratachys, which is now treated as a synonym or subgenus of Tachys. Like other members of the genus, it is likely a small, fast-running beetle associated with ground habitats.
Tachys proximus
Tachys proximus is a small ground beetle in the family Carabidae. The genus Tachys contains numerous diminutive species often referred to as 'tiger beetles' or 'ant-like beetles' due to their small size and rapid movements. T. proximus occurs across North America and into Central America. Like other members of its genus, it is likely associated with moist microhabitats where it actively hunts small invertebrate prey.
Tachys pumilus
Tachys pumilus is a species of ground beetle in the family Carabidae. It is distributed across North America, Central America, and the Caribbean. The genus Tachys contains numerous small, fast-running ground beetle species, though specific biological details for T. pumilus remain poorly documented in published literature.
Tachys rhodeanus
Tachys rhodeanus is a species of ground beetle in the family Carabidae. It is found in North America. The species was described by Casey in 1918.
Tachys scitulus
Tachys scitulus is a species of ground beetle in the family Carabidae, first described by LeConte in 1848. The species is distributed across North America and the Caribbean region. Like other members of the genus Tachys, it belongs to a group of small, fast-running ground beetles often associated with moist habitats. Beyond basic taxonomic and distribution data, detailed biological information for this specific species remains limited in published sources.
Tachys ventricosus
Tachys ventricosus is a species of ground beetle in the family Carabidae, described by LeConte in 1863. It belongs to the large genus Tachys, which comprises small, often difficult-to-identify beetles commonly known as "tachys" or "tachys beetles." The species is recorded from the United States, with distribution data indicating presence in North America. As with many members of this genus, detailed biological information is limited in available sources.
Tachys vittiger
Tachys vittiger is a species of ground beetle in the family Carabidae. It is a small, fast-running beetle found in North America, with records from Canada, the United States, and extending south to Guatemala and the Galapagos Islands. Like other members of the genus Tachys, it is typically associated with moist habitats near water bodies. The species was described by John Lawrence LeConte in 1852.
Tachyta
Tachyta is a genus of ground beetles in the family Carabidae, first described by Kirby in 1837. The genus contains more than 30 described species. These beetles are members of the tribe Bembidiini within the subfamily Trechinae.
Tachyta angulata
Tachyta angulata is a small ground beetle in the family Carabidae, first described by Casey in 1918. It is known to occur in North America, with records from Canada, Mexico, and the United States. Like other members of the genus Tachyta, this species is likely associated with moist or wetland habitats, though specific ecological details remain poorly documented.
Tachyta falli
Tachyta falli is a small ground beetle species in the family Carabidae, first described by Hayward in 1900. It belongs to the tribe Bembidiini within the subfamily Trechinae. The species is known from North America, with records from both the United States and Canada. Like other members of its genus, it is likely associated with moist or riparian habitats, though specific ecological details remain poorly documented.
Tanystoma
Tanystoma is a genus of ground beetles (Carabidae) in the subfamily Platyninae. It comprises five described species distributed along the Pacific Coast of North America. One species, Tanystoma maculicolle, is commonly known as the tule beetle. The genus was established by Motschulsky in 1845.
Tanystoma striatum
Tanystoma striatum is a species of ground beetle in the family Carabidae, first described by Dejean in 1828. It belongs to the subfamily Platyninae and is found in North America. The specific epithet 'striatum' refers to striations or grooves, likely describing a characteristic of the elytra. Available information on this species is limited.
Tecnophilus
Tecnophilus is a genus of ground beetles in the family Carabidae, established by Chaudoir in 1877. The genus contains two described species: Tecnophilus croceicollis and Tecnophilus pilatei. It belongs to the subtribe Agrina within the tribe Lebiini, subfamily Lebiinae. The genus is rarely encountered in collections and field observations.
Tecnophilus pilatei
Tecnophilus pilatei is a ground beetle in the family Carabidae, first described by Chaudoir in 1877. It belongs to the subfamily Lebiinae and tribe Lebiini. The species is known from the southwestern United States. Like other members of its genus, it is likely a nocturnal predator adapted to arid or semi-arid environments, though specific ecological details remain poorly documented.
Tetragonoderus intersectus
Tetragonoderus intersectus is a ground beetle in the family Carabidae, first described by Ernst Friedrich Germar in 1824. The species is recorded from North America, with confirmed observations in the United States. It is known to feed on vegetable leaves including cabbage and beet. As a member of the tribe Lebiini, it belongs to a diverse group of small to medium-sized carabid beetles often associated with vegetation.
Tetragonoderus laevigatus
Tetragonoderus laevigatus is a small ground beetle in the family Carabidae, first described by Chaudoir in 1876. The species is native to South America but has been introduced to the southeastern United States, where it has been recorded in Florida, Georgia, Mississippi, and Louisiana. It belongs to the tribe Lebiini, a diverse group of carabid beetles often associated with vegetation and ground-dwelling habitats.
Tetragonoderus pallidus
Tetragonoderus pallidus is a species of ground beetle in the family Carabidae, first described by George Henry Horn in 1868. The species is endemic to the Sonoran Desert region, occurring in the southwestern United States and northwestern Mexico. Records indicate presence in Arizona, California, and Mexico. As a member of the genus Tetragonoderus, it belongs to a group of small carabid beetles, though specific morphological and ecological details for this species remain limited in the available literature.
Thalpius
Thalpius is a genus of ground beetles in the family Carabidae, tribe Lebiini. These small to medium-sized beetles are part of the diverse carabid fauna of North America. The genus was established by Leconte in 1851 and contains multiple species distributed primarily in the United States and adjacent regions.
Thalpius dorsalis
Thalpius dorsalis is a ground beetle (Carabidae) in the tribe Zuphiini. It is currently classified as a synonym of Pseudaptinus dorsalis. The species was described by Brullé in 1834 and has been recorded from Cuba and the United States. As a member of the ground beetle family, it likely occupies soil and ground-level habitats, though specific ecological details remain poorly documented.
Thalpius hoegei
Thalpius hoegei is a ground beetle species (Coleoptera: Carabidae) originally described by Bates in 1883. It is currently treated as a synonym of Pseudaptinus hoegei, reflecting taxonomic reclassification within the tribe Zuphiini. The species belongs to a group of carabid beetles characterized by specialized predatory habits and association with ant colonies. Records indicate presence in Mexico and the southwestern United States.
Thalpius horni
Thalpius horni is a species of ground beetle in the family Carabidae, first described by Chaudoir in 1872. It is currently classified within the genus Thalpius, though it was historically placed in Pseudaptinus as a subgenus. The species is known from the United States and is considered a synonym of Pseudaptinus horni in some taxonomic treatments. As a member of the tribe Zuphiini, it belongs to a group of carabid beetles often associated with particular microhabitats and prey specializations.
Thalpius nobilis
Thalpius nobilis is a ground beetle species described by Liebke in 1934. It belongs to the tribe Zuphiini within the subfamily Dryptinae of Carabidae. The species has been recorded from Costa Rica, Mexico, and the United States. Its taxonomic status has been subject to revision, with some sources treating it as a synonym of Pseudaptinus nobilis.
Thalpius pygmaeus
Thalpius pygmaeus is a small ground beetle in the family Carabidae, subfamily Dryptinae, described by Dejean in 1826. The species is classified within the tribe Zuphiini, a group of carabid beetles often associated with ant colonies or exhibiting myrmecophilous tendencies. Very little specific biological information has been documented for this particular species. It is currently treated as a valid species in the genus Thalpius, though some classifications place it within the subgenus Pseudaptinus (Thalpius). The species epithet "pygmaeus" refers to its small size.
Thalpius simplex
Thalpius simplex is a ground beetle species in the family Carabidae, originally described by Liebke in 1934. It is currently treated as a synonym of Pseudaptinus simplex. The species is known from Mexico. As a member of the subfamily Dryptinae and tribe Zuphiini, it belongs to a group of carabid beetles often associated with predatory habits, though specific biological details for this species remain poorly documented.
Trechinae
Trechinae is a subfamily of ground beetles (Carabidae) containing over 6,700 described species across more than 430 genera and 6 tribes. The group exhibits remarkable diversity in habitat preferences, ranging from surface-dwelling species in alpine páramos and saline coastal environments to highly specialized troglobitic (obligate cave-dwelling) forms with extreme morphological adaptations including eyelessness and depigmentation. Notable tribes include Trechini, which contains the most morphologically modified cave-adapted species, and Pogonini, which are primarily associated with humid and saline environments.
Trechini
Trechini is a large and diverse tribe of small ground beetles in the family Carabidae, comprising over 270 genera and more than 2,400 described species worldwide. Members are typically diminutive, often less than 5 mm in length, with many species measuring 1 mm or less. The tribe exhibits remarkable habitat breadth, occurring in terrestrial, subterranean, and high-altitude mountain environments across all continents except Antarctica, though fossil evidence indicates former presence there. Trechini includes numerous cave-adapted lineages, making it the most diverse and cave-specialized group among Carabidae tribes in subterranean habitats.
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.
Trechus
Trechus is a large genus of ground beetles (Carabidae) comprising over 1,000 described species. The genus is distributed across the Palearctic, Near East, and highlands of East Africa. The name derives from the Greek word *trécho*, meaning "I run." Species occupy diverse habitats including floodplain meadows, alpine zones, and volcanic highlands.
Trechus apicalis
Trechus apicalis is a species of ground beetle in the subfamily Trechinae, first described by Motschulsky in 1845. It belongs to the large genus Trechus, which comprises numerous small carabid beetles often associated with cool, moist habitats. The species has a Holarctic distribution, occurring across northern regions of North America and Eurasia.
Trechus chalybeus
Trechus chalybeus is a small ground beetle in the family Carabidae, subfamily Trechinae. The species was described by Dejean in 1831 and has been historically placed in the genus Epaphius by some authorities. It is known from North America with records across the northern United States, Canada, and Alaska. As a member of the large genus Trechus, it shares the typical characteristics of small, often metallic carabid beetles associated with ground-level habitats.
Trechus hydropicus
Trechus hydropicus is a species of ground beetle in the family Carabidae. It was described by G. Horn in 1883. The species is native to North America and is recognized to include four subspecies. As a member of the genus Trechus, it belongs to a diverse group of small carabid beetles commonly known as blind beetles or cave beetles, though many species inhabit surface environments.
Trechus obtusus
Trechus obtusus is a ground beetle species in the family Carabidae, originally described from Europe and now established as an invasive species in Hawaii. It has been documented in large numbers in pitfall traps at Pu'u Maka'ala Natural Area Reserve on the island of Hawaii, where it may compete with or displace native carabid species. The species has a broad native distribution spanning North America, Europe, and Africa, with six recognized subspecies showing regional variation.
Trechus quadristriatus
Four-lined ground beetle
Trechus quadristriatus is a small ground beetle in the family Carabidae, distributed across North America, Europe, temperate Asia, and Africa. It has been studied primarily in agricultural landscapes, where its ecology has been examined alongside similar carabid species. The species is one of many in the large genus Trechus, which comprises numerous small, often difficult-to-distinguish ground beetles.
Trechus satanicus
Trechus satanicus is a species of ground beetle in the subfamily Trechinae, described by Barr in 1962. It belongs to the genus Trechus, a large and diverse group of small carabid beetles distributed across the Northern Hemisphere. The species epithet "satanicus" refers to its association with subterranean or cave-like habitats, from which the name derives. Like other members of Trechus, it is likely adapted to moist, dark microhabitats.
Trechus schwarzi saludae
Trechus schwarzi saludae is a subspecies of ground beetle in the family Carabidae, described by Barr in 1979. It belongs to the large genus Trechus, which comprises numerous ground beetle species primarily found in temperate regions. As a subspecies of T. schwarzi, it represents a geographically restricted population with presumably distinct morphological characteristics that warranted subspecific recognition. The species epithet 'schwarzi' honors a person, likely an entomologist or collector, while 'saludae' refers to a geographic locality.
Trechus tuckaleechee
Trechus tuckaleechee is a species of ground beetle in the subfamily Trechinae, described by Barr in 1962. It belongs to the genus Trechus, a large and widespread group of small carabid beetles commonly known as blind beetles or trechine ground beetles. The species epithet 'tuckaleechee' likely references Tuckaleechee, a location in Tennessee, USA, suggesting a restricted geographic distribution. Like other Trechus species, it is presumably adapted to subterranean or cryptic habitats.
Trechus vandykei
Trechus vandykei is a species of ground beetle in the family Carabidae, subfamily Trechinae. It was described by Jeannel in 1927. The species is currently accepted as valid, though some sources list it as a synonym of Trechus striatulus. It belongs to the large genus Trechus, which contains numerous ground beetle species distributed across North America and other regions.
Trechus vandykei pisgahensis
A subspecies of ground beetle in the family Carabidae, described by Barr in 1979. This taxon belongs to the genus Trechus, a diverse group of small carabid beetles commonly known as ground beetles. The subspecific epithet 'pisgahensis' suggests an association with Pisgah, likely referring to a geographic location in the southeastern United States.
Trichotichnus fulgens
Trichotichnus fulgens is a ground beetle species in the family Carabidae, originally described by Csiki in 1932. The species is currently considered a synonym of Trichotichnus nitidulus according to GBIF taxonomy. It is recorded from North America, specifically Canada and the United States. As a member of the tribe Harpalini, it belongs to a diverse group of ground beetles commonly found in terrestrial habitats. The genus Trichotichnus contains multiple species distributed across the Holarctic region.
Trichotichnus vulpeculus
Trichotichnus vulpeculus is a ground beetle species in the family Carabidae, distributed across North America. The species was described by Thomas Say in 1823 and is currently accepted as valid, though some sources list it as a synonym of Parophonus (Hyparpalus) holosericeus. It belongs to the tribe Harpalini, a diverse group of ground beetles often associated with open habitats.
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.
Xenotrechus condei
Northern Xenotrechus Cave Beetle
Xenotrechus condei is a cave-dwelling ground beetle in the family Carabidae, subfamily Trechinae. It is one of several species in the genus Xenotrechus, a group specialized for subterranean habitats. The species was described in 1967 from specimens collected in the United States. It represents a lineage of beetles that have adapted to permanent darkness and associated cave conditions.