Carabidae
Guides
Amerizus spectabilis
spectacular riverbank ground beetle
Amerizus spectabilis is a species of ground beetle in the family Carabidae. It occurs along the Pacific coast of North America from Alaska to California. The species is commonly known as the spectacular riverbank ground beetle.
Amerizus wingatei
Wingate's riverbank ground beetle
Amerizus wingatei is a small ground beetle in the family Carabidae, commonly known as Wingate's riverbank ground beetle. The species was originally described as Bembidion wingatei by Bland in 1864 and later transferred to the genus Amerizus. It is primarily associated with riparian habitats in eastern North America. Reports of its presence in Europe and northern Asia are disputed and not supported by recent taxonomic reviews.
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.
Amphasia interstitialis
Red-headed Ground Beetle
Amphasia interstitialis, commonly known as the red-headed ground beetle, is a small ground beetle native to North America. Adults measure 8.5–10.2 mm and display distinctive coloration with dark elytra contrasting against an orange pronotum and head. The species occupies moist, covered microhabitats within deciduous forests, including leaf litter and spaces beneath stones and logs. It is widespread across the northeastern United States and adjacent Canadian provinces, with populations extending into the central United States.
Anatrichis
Anatrichis is a genus of ground beetles in the family Carabidae, established by LeConte in 1853. The genus belongs to the subfamily Licininae and tribe Oodini. It comprises approximately eleven described species distributed across multiple continents including Asia, Australia, and North America. Species within this genus are generally small-bodied, with several species names (lilliputana, minuta, pusilla) reflecting this diminutive size.
Anatrichis minuta
Anatrichis minuta is a species of ground beetle in the family Carabidae, first described by Dejean in 1831. It is a small beetle distributed across North America. The species belongs to the subfamily Licininae and tribe Oodini, placing it among a diverse group of predatory ground beetles. Beyond basic taxonomic classification and geographic distribution, detailed ecological and behavioral information for this species remains limited in available sources.
Anchomenus
Anchomenus is a genus of ground beetles (Carabidae) established by Bonelli in 1810. The genus is distributed across the Palearctic region, including Europe, the Near East, and North Africa, with 18 extant species and two fossil species. One species, Anchomenus dorsalis, has been studied as a climate change indicator due to its sensitivity to temperature and precipitation variables.
Anchomenus funebris
Anchomenus funebris is a ground beetle in the family Carabidae, first described by LeConte in 1854. It belongs to the subfamily Platyninae and tribe Anchomenini. The species is found in North America, with distribution records from the United States. Like other ground beetles, it is likely a predatory species, though specific ecological details remain poorly documented in available sources.
Anchonoderus horni
Anchonoderus horni is a ground beetle species in the family Carabidae, described by Csiki in 1931. It belongs to the tribe Lachnophorini within the subfamily Lebiinae. The species is known from Mexico, though detailed biological information appears limited in available literature. Like other members of the genus Anchonoderus, it is presumably a ground-dwelling predatory beetle.
Anchonoderus schaefferi
Anchonoderus schaefferi is a species of ground beetle in the family Carabidae. It was described by Liebke in 1928. The species is known to occur in North America, specifically within the United States. Very little detailed biological or ecological information has been published about this species.
Anillina
A subtribe of minute ground beetles (Carabidae: Bembidiini) characterized by reduced eyes, elongated appendages, and adaptations for subterranean or cryptic habitats. Members exhibit convergent morphological traits associated with life in soil, leaf litter, or caves. The subtribe includes genera distributed across southern Gondwanan landmasses including New Zealand, Madagascar, and Australia, as well as the Northern Hemisphere.
Anillinus alleni
Anillinus alleni is a minute ground beetle species described in 2017 from the southeastern United States. As a member of the tribe Anillina within Carabidae, it belongs to a group of extremely small, eyeless or nearly eyeless beetles adapted to subterranean or deep soil habitats. The genus Anillinus comprises numerous species with limited distributions, many described only in recent decades as taxonomic attention has focused on this previously overlooked fauna.
Anillinus arenicollis
Anillinus arenicollis is a species of minute ground beetle in the family Carabidae. It belongs to a genus of small, often eyeless or reduced-eyed beetles adapted to subterranean or soil-dwelling habits. The species epithet 'arenicollis' suggests association with sandy habitats. Members of Anillinus are among the smallest carabid beetles and are poorly known due to their cryptic lifestyle.
Anillinus balli
Anillinus balli is a small ground beetle in the family Carabidae, described in 2004 by Sokolov and Carlton. It is one of numerous species in the genus Anillinus, a group of minute carabids characterized by reduced eyes and elongated appendages adapted for subterranean life. The species is found in the United States. Like other members of its genus, it is likely adapted to mesic forest habitats with deep leaf litter and soil crevices.
Anillinus barberi
Anillinus barberi is a small carabid beetle in the tribe Bembidiini, described by Jeannel in 1963. It belongs to a genus of minute ground beetles characterized by reduced or absent eyes and elongated appendages adapted for subterranean life. The species is known from the United States and is part of a poorly studied group of beetles with limited published ecological data.
Anillinus chilhowee
Anillinus chilhowee is a small ground beetle (Carabidae) in the tribe Bembidiini, described by Sokolov in 2011. It belongs to the genus Anillinus, a group of minute, eyeless or nearly eyeless beetles adapted to subterranean or deep soil habitats. The species epithet references the Chilhowee region, likely indicating its type locality in the southeastern United States.
Anillinus davidsoni
Anillinus davidsoni is a species of small ground beetle in the family Carabidae, described by Sokolov in 2012. It belongs to the tribe Bembidiini and subtribe Anillina, a group of minute, often eyeless or reduced-eyed beetles adapted to subterranean or cryptic habitats. The genus Anillinus is endemic to North America, with species distributed primarily in the eastern and central United States.
Anillinus dentatus
Anillinus dentatus is a species of minute ground beetle in the family Carabidae. Members of the genus Anillinus are eyeless, subterranean beetles adapted to life in soil and cave environments. The specific epithet "dentatus" refers to toothed characteristics, likely of the mandibles or elytral margins. These beetles are part of the diverse North American cave beetle fauna, with species in this genus primarily distributed in the eastern and central United States.
Anillinus depressus
Anillinus depressus is a small ground beetle in the family Carabidae, described by Jeannel in 1963. It belongs to the subtribe Anillina, a group of minute carabids adapted to subterranean or cryptic habitats. The species is recorded from the United States and is part of the North American fauna of anilline beetles.
Anillinus elongatus
Anillinus elongatus is a species of ground beetle in the family Carabidae, first described by Jeannel in 1963. It belongs to the genus Anillinus, a group of small, often eyeless or reduced-eyed beetles typically associated with subterranean or soil-dwelling habitats. The species is known from the United States, with records indicating presence in North America. Like other members of the subtribe Anillina, it is likely adapted to specialized microhabitats such as leaf litter, soil, or caves.
Anillinus erwini
Anillinus erwini is a species of ground beetle in the family Carabidae, first described by Sokolov and Carlton in 2004. It is a member of the tribe Anillina, a group of small, often eyeless or reduced-eye beetles adapted to subterranean or cryptic habitats. The species is known from the United States and is part of a genus containing numerous species with limited distributions.
Anillinus folkertsi
Anillinus folkertsi is a small ground beetle in the tribe Anillini (Carabidae), described from Alabama in 2004. Species in this genus are typically minute, eyeless or with reduced eyes, and adapted to life in soil and leaf litter habitats. The genus Anillinus is part of a diverse radiation of anilline ground beetles in eastern North America.
Anillinus fortis
Anillinus fortis is a species of small ground beetle in the family Carabidae, endemic to the Eastern United States. It belongs to the tribe Anillina within the subfamily Trechinae, a group characterized by reduced eyes and adaptations to subterranean or soil-dwelling habits. The species was described by George Henry Horn in 1869. Like other members of its genus, it likely inhabits forest floor litter and soil microhabitats.
Anillinus jancae
Anillinus jancae is a small, eyeless ground beetle in the tribe Bembidiini. It was described by Thomas C. Barr in 1995 based on specimens from Kentucky. The species belongs to a genus of minute carabids adapted to subterranean or deep soil habitats. Like other Anillinus species, it exhibits troglomorphic traits including reduced pigmentation and vestigial eyes.
Anillinus kingi
Anillinus kingi is a species of minute ground beetle in the family Carabidae, described by Sokolov in 2012. The genus Anillinus comprises small, often eyeless or reduced-eyed beetles adapted to subterranean or hypogean habitats. Members of this genus are typically found in soil, leaf litter, or caves in North America. Anillinus kingi is known from the United States.
Anillinus micamicus
Anillinus micamicus is a species of minute ground beetle in the tribe Anillini, subfamily Bembidiinae. Species in this genus are characterized by their extremely small size, reduced eyes, and subterranean or soil-dwelling habits. Anillinus micamicus was described from specimens collected in the southeastern United States. Like other anillines, it is presumed to inhabit deep soil and leaf litter layers, where it occupies a cryptic lifestyle with limited surface activity.
Anillinus moseleyae
Anillinus moseleyae is a small ground beetle described in 2004 from the southeastern United States. It belongs to the genus Anillinus, a group of minute, eyeless or reduced-eye beetles adapted to subterranean and soil-dwelling habitats. The species was named in honor of an individual (Moseley), following standard patronymic conventions. Like other members of the subtribe Anillina, it is presumed to inhabit deep soil, leaf litter, or cave-associated environments, though specific ecological details remain limited.
Anillinus murrayae
Anillinus murrayae is a small ground beetle in the family Carabidae, described by Sokolov and Carlton in 2004. It belongs to the genus Anillinus, a group of minute, eyeless or nearly eyeless beetles adapted to subterranean and soil-dwelling lifestyles. The species is known from the United States. Like other members of its genus, it likely inhabits deep soil and leaf litter layers in forested environments.
Anillinus pecki
Anillinus pecki is a species of small ground beetle in the family Carabidae, described by Giachino in 2011. It belongs to the subtribe Anillina, a group of minute carabid beetles often associated with subterranean or soil-dwelling habitats. The genus Anillinus is endemic to North America, with species distributed primarily in the eastern and central United States. Like other anillines, this species is likely eyeless or has highly reduced eyes and exhibits morphological adaptations for life in soil, leaf litter, or cave-like microhabitats.
Anillinus robisoni
Anillinus robisoni is a small ground beetle in the family Carabidae, described from the United States in 2004. It belongs to the tribe Anillina, a group of minute carabids adapted to subterranean or cryptic habitats. The species is known from limited collection records.
Anillinus steevesi
Anillinus steevesi is a small ground beetle in the family Carabidae, described by Barr in 1995. It belongs to the subtribe Anillina, a group of minute carabids often associated with subterranean or soil-surface habitats. The species is known from the United States.
Anillinus tishechkini
Anillinus tishechkini is a small ground beetle species described in 2004 from the United States. It belongs to the tribe Anillina within Carabidae, a group characterized by reduced eyes and subterranean habits. The species is part of a genus containing numerous micro-endemic taxa in North America.
Anillinus virginiae
Anillinus virginiae is a species of ground beetle in the family Carabidae, described by Jeannel in 1963. It belongs to the genus Anillinus, a group of small, eyeless or reduced-eye beetles adapted to subterranean or cryptic habitats. The species is known from the United States, with the specific epithet suggesting a type locality in Virginia. Like other members of the subtribe Anillina, it is likely associated with soil and leaf litter environments.
Anisocnemus
Anisocnemus is a genus of ground beetles (Carabidae: Harpalini) endemic to the Neotropics. Adults are known to be burrowers and capable of flight dispersal. The genus contains two described species: A. amblygonus and A. validu. Information on immature stages and detailed ecology remains limited.
Anisodactylus agricola
Anisodactylus agricola is a ground beetle species in the family Carabidae, first described by Thomas Say in 1823 as Harpalus agricola. It is native to North America with recorded occurrences in the United States and Canada. The species belongs to the genus Anisodactylus, a group of carabid beetles commonly associated with open and disturbed habitats.
Anisodactylus alternans
Anisodactylus alternans is a ground beetle in the family Carabidae, found in North America. It belongs to the tribe Anisodactylini, which includes several granivorous species known to consume weed seeds. The species has been recorded in the United States and British Columbia, Canada. Specific details about its biology and ecology remain limited in published literature.
Anisodactylus anthracinus
Anisodactylus anthracinus is a ground beetle in the family Carabidae. It is found in North America, with confirmed records from the United States. The genus Anisodactylus includes species known for granivory, feeding on weed seeds.
Anisodactylus californicus
Anisodactylus californicus is a ground beetle species in the family Carabidae, first described by Dejean in 1829. The species occurs in western North America, with records from the United States and Canada. As a member of the genus Anisodactylus, it belongs to a group of carabid beetles commonly known as hairy ground beetles, though specific ecological and biological details for this particular species remain poorly documented in available literature.
Anisodactylus carbonarius
Anisodactylus carbonarius is a ground beetle in the family Carabidae, native to North America. It is a granivorous species that feeds on weed seeds, contributing to natural weed suppression in agricultural and garden settings. The species has been documented across Canada and the United States. Like other members of its genus, it plays a role in ecosystem services through seed predation.
Anisodactylus consobrinus
Anisodactylus consobrinus is a ground beetle species in the family Carabidae, described by John Lawrence LeConte in 1851. The species belongs to the genus Anisodactylus, a group of medium-sized carabid beetles commonly found in open habitats. It occurs in North America with records from the United States and Mexico.
Anisodactylus haplomus
Anisodactylus haplomus is a species of ground beetle in the family Carabidae. It is native to North America and is part of the diverse genus Anisodactylus. Very little specific information has been published about this particular species.
Anisodactylus harpaloides
Anisodactylus harpaloides is a species of ground beetle in the family Carabidae. It is found in North America. The genus Anisodactylus includes species with diverse feeding habits, including granivory.
Anisodactylus harrisii
Anisodactylus harrisii is a species of ground beetle in the family Carabidae. It occurs in North America, with records from Canada and the United States. The species belongs to a genus known to include granivorous ground beetles that consume weed seeds.
Anisodactylus kirbyi
Kirby's ground beetle
Anisodactylus kirbyi is a ground beetle species in the family Carabidae, first described by Lindroth in 1953. It belongs to the genus Anisodactylus, a group of ground beetles commonly found in open, often disturbed habitats. The species is recorded from North America, specifically Canada and the United States.
Anisodactylus laetus
Anisodactylus laetus is a ground beetle in the family Carabidae, first described by Dejean in 1829. The species occurs in North America, with records from Canada and the United States. It belongs to a genus that includes granivorous species known to consume weed seeds.
Anisodactylus lodingi
Anisodactylus lodingi is a ground beetle species described by Schaeffer in 1911. It belongs to a genus that includes several granivorous species known to consume weed seeds. The species is recorded from the United States.
Anisodactylus merula
Anisodactylus merula is a ground beetle species in the family Carabidae. It is native to North America, with distribution records from Canada and the United States. The genus Anisodactylus includes granivorous species that consume weed seeds, though specific dietary habits for A. merula have not been individually documented.
Anisodactylus opaculus
Anisodactylus opaculus is a ground beetle species in the family Carabidae, described by LeConte in 1863. It is native to North America and occurs in the United States. The species belongs to a genus containing several granivorous ground beetles, though specific feeding habits for this species have not been documented.
Anisodactylus ovularis
Anisodactylus ovularis is a species of ground beetle in the family Carabidae. It is native to North America, with confirmed records from Canada and the United States. The genus Anisodactylus includes species with diverse feeding habits, including granivory, though specific dietary information for A. ovularis remains undocumented.
Anisodactylus pitychrous
Anisodactylus pitychrous is a species of ground beetle in the family Carabidae. The genus Anisodactylus includes species known for granivory, feeding on weed seeds. Specific details about this species are limited in available sources.