Earota is a genus of rove beetles in the family Staphylinidae, subfamily Aleocharinae, tribe Geostibini. The genus was established by Mulsant and Rey in 1873. As a member of Geostibini, Earota belongs to a group of aleocharine rove beetles often associated with soil and ground-dwelling habitats. The genus contains relatively few described species and remains poorly studied in comparison to more speciose aleocharine genera.
Ebaeina is a subtribe of soft-bodied plant beetles within the family Melyridae (order Coleoptera). Members of this subtribe are characterized by their soft, flexible elytra and generally small to medium body size. The subtribe is primarily distributed in the Holarctic region, with greatest diversity in western North America. Ebaeina beetles are often found in association with flowers and vegetation where they feed on pollen and small arthropods.
Eburia stigma is a longhorn beetle in the family Cerambycidae, distributed across the Caribbean, Middle America, and North America. The species belongs to the tribe Eburiini within the subfamily Cerambycinae. Records indicate presence in the Caribbean region, Middle America, and North America, with museum specimens documented from the British Museum.
Ecitonidia wheeleri is a species of rove beetle in the family Staphylinidae, subfamily Aleocharinae. It was described by Wasmann in 1900. The species belongs to the tribe Lomechusini, which includes many myrmecophilous (ant-associated) beetles. This species has been recorded from several states in the south-central and southwestern United States.
water penny beetle
Ectopria leechi is a species of water penny beetle in the family Psephenidae, first described by Brigham in 1981. The species is found in North America, with documented occurrences in Ontario, Canada. Like other members of Psephenidae, the larvae are aquatic and have a distinctive flattened, circular body form. Adult beetles are terrestrial.
Rough-coated Longhorned Beetle
Ecyrus dasycerus is a species of longhorn beetle in the family Cerambycidae, first described by Thomas Say in 1827. It is known from North America, with records from the United States and Mexico. The species exhibits two recognized subspecies: the nominate E. d. dasycerus and E. d. floridanus described by Linsley in 1935. Like other members of the subfamily Lamiinae, it is a wood-associated beetle whose larvae develop in dead or dying woody plants.
Ega sallei is a ground beetle species in the family Carabidae, first described by Chevrolat in 1839. It belongs to the tribe Lachnophorini within the subfamily Lebiinae. The species has been recorded from Guatemala, Mexico, Nicaragua, and the United States, with observations concentrated in Middle America. As a member of the Carabidae family, it is presumed to be a predatory beetle, though specific ecological details remain poorly documented.
Eidophelus is a genus of minute bark beetles in the family Curculionidae, subfamily Scolytinae. The genus was established by Eichhoff in 1876 and contains species formerly classified within the tribe Cryphalini. Based on recent taxonomic revision, Eidophelus has been reassigned from the former Cryphalini to one of three newly erected tribes. Species are extremely small, comparable in size to a grain of wheat.
Eidoreus politus is a small beetle species in the family Eupsilobiidae, a group of polyphagan beetles formerly treated as part of Corylophidae. The species was described by Casey in 1895 and is known from collections across Central America and North America. Like other eupsilobiids, it is likely associated with fungal habitats, though specific ecological details remain poorly documented.
Barely Hairy Baridine
Eisonyx crassipes is a species of flower weevil in the beetle family Curculionidae, described by LeConte in 1880. It is found in North America. The species is part of the genus Eisonyx, which belongs to the diverse weevil family characterized by elongated snouts. As a flower weevil, it is likely associated with flowering plants, though specific ecological details remain poorly documented.
false tiger beetles
Elacatis is a genus of false tiger beetles in the family Salpingidae, containing approximately 13 described species. The genus was established by Pascoe in 1860. Seven species are recognized in the Nearctic region north of Mexico, including two recently described species: E. larsoni from Nebraska and E. stephani from Arizona. The genus is classified within the subfamily Othniinae.
Elacatis immaculatus is a small beetle in the family Salpingidae, first recorded from north of Mexico in a 2018 taxonomic revision of Nearctic Elacatis species. The species was originally described by Champion from Central America. The revision recognizes seven Nearctic species in the genus, with E. immaculatus representing one of two species newly documented from the region. No specific biological or ecological information is available for this species in published literature.
Elacatis umbrosus is a narrow-waisted bark beetle in the family Salpingidae. It is restricted to western North America where it is associated with dead and dying conifers. The species was originally described as Othnius umbrosus by LeConte in 1861, with Othnius lugubris Horn 1868 later synonymized under it. It is one of seven recognized Nearctic species in the genus Elacatis.
Elaphrinae is a subfamily of ground beetles (Carabidae) established by Latreille in 1802. The subfamily comprises at least four extant genera—Blethisa, Diacheila, Elaphrus, and the fossil genus †Elaphrotites—with more than 50 described species. Elaphrinae is one of several Carabidae subfamilies documented in meadow-steppe habitats of western Ukraine, where six species have been recorded.
Elaphropus is a genus of ground beetles in the family Carabidae, containing at least 370 described species. These small beetles belong to the tribe Bembidiini and are part of the diverse carabid fauna found across multiple continents. The genus was established by Motschulsky in 1839 and represents a significant component of global ground beetle diversity.
Elaphropus anceps is a small ground beetle in the family Carabidae, subfamily Trechinae. It belongs to a diverse genus of minute carabids often found in moist microhabitats. The species is known from North America, with records from the United States and Canada. Like other members of the tribe Bembidiini, it is likely associated with riparian or wetland edges, though specific ecological details remain poorly documented.
Elaphropus anthrax is a small ground beetle in the family Carabidae, subfamily Trechinae. It belongs to a large genus of minute carabids often found in moist or riparian habitats. The species was described by John Lawrence LeConte in 1852 and is known from western North America, including British Columbia and the western United States. Like other members of its genus, it is likely associated with sandy or gravelly substrates near water.
Elaphropus ferrugineus is a species of ground beetle in the family Carabidae. It is found in North America, with distribution records from the United States. The species was described by Dejean in 1831. As a member of the genus Elaphropus, it belongs to a group of small carabid beetles.
Elaphropus fuscicornis is a small ground beetle in the family Carabidae, first described by Chaudoir in 1868. The genus Elaphropus belongs to the tribe Bembidiini and comprises diminutive carabids often found in moist microhabitats. This species is known from the United States with records from North America.
Elaphropus incurvus is a small ground beetle in the family Carabidae, described by Thomas Say in 1830. It belongs to a genus of diminutive carabids often associated with moist microhabitats. The species is documented from North America, with records from both the United States and Canada. Like other members of Elaphropus, it is likely a ground-dwelling predator, though specific ecological studies are limited.
Elaphropus vivax is a small ground beetle in the family Carabidae, first described by LeConte in 1848. It belongs to a genus of diminutive carabids often associated with moist microhabitats. The species is documented from North America, with records from both Canada and the United States. Like other members of Elaphropus, it is likely adapted to riparian or wetland edge environments, though specific ecological studies are limited.
Elassoptes is a monotypic genus of true weevils (family Curculionidae) containing a single species, Elassoptes marinus. The genus was established by George Henry Horn in 1873. As a member of the largest beetle family, it possesses the characteristic elongated rostrum (snout) typical of weevils. The genus is rarely encountered in collections and field observations, with limited biological data available.
click beetles
Elaterinae is a subfamily of click beetles (family Elateridae) comprising 12 tribes distributed worldwide. Members possess the characteristic 'click' mechanism of the family, using a prosternal spine and mesosternal groove to spring themselves upright when overturned. The subfamily is taxonomically diverse and includes numerous genera across varied habitats. On Lord Howe Island, Australia, at least seven genera have been documented, including the endemic radiation of Ochosternus.
Elathous nebulosus is a species of click beetle in the family Elateridae, first described by Van Dyke in 1932. It belongs to the genus Elathous, a group of elaterid beetles. The species is known from British Columbia, Canada based on available collection records.
Elatotrypes hoferi is a species of longhorn beetle in the family Cerambycidae, described by Fisher in 1919. It belongs to the tribe Callidiini within the subfamily Cerambycinae. The species is known from western Canada, with records from Alberta and British Columbia. Very few observations exist in public databases, suggesting it is either rare, cryptic, or undercollected.
Eleates occidentalis is a species of darkling beetle in the family Tenebrionidae, described by Casey in 1886. The genus Eleates belongs to a diverse family of beetles commonly found in arid and semi-arid environments. As a member of Tenebrionidae, this species likely exhibits adaptations to dry conditions typical of the group.
Eleodes arcuata is a species of darkling beetle in the family Tenebrionidae, first described by Thomas Lincoln Casey in 1884. The species belongs to the genus Eleodes, a diverse group of beetles commonly known as clown beetles or desert stink beetles. Records indicate this species occurs in Mexico. Like other members of Eleodes, it is likely adapted to arid or semi-arid environments, though specific ecological details remain poorly documented.
Island Darkling Beetle
A darkling beetle in the family Tenebrionidae, known from limited observations primarily on islands. The species belongs to the diverse genus Eleodes, commonly referred to as clown beetles or stink beetles due to their defensive behaviors. Available records indicate a restricted distribution with relatively few documented observations.
Eleodes knullorum is a darkling beetle species in the family Tenebrionidae, described by Triplehorn in 1971. It belongs to the diverse genus Eleodes, commonly known as clown beetles or desert stink beetles. Records indicate this species occurs in Mexico. As with many Eleodes species, it likely exhibits the defensive head-stand behavior characteristic of the genus when disturbed.
Eleodes longipilosa is a species of darkling beetle in the family Tenebrionidae, described by Horn in 1891. The species belongs to the large genus Eleodes, commonly known as clown beetles or stink beetles, which are characterized by their defensive head-stand posture when threatened. Specific ecological and behavioral details for E. longipilosa remain poorly documented in published literature. The species name 'longipilosa' suggests long pilosity (hairiness), though this characteristic has not been explicitly described in available sources.
Riley's clown beetle
Eleodes rileyi is a species of clown beetle in the family Tenebrionidae. It belongs to the large genus Eleodes, which contains numerous species of darkling beetles commonly known as clown beetles or stink beetles due to their defensive head-standing behavior. The species was described by Casey in 1891. Like other members of the genus, it is presumed to exhibit the characteristic defensive posture of raising its abdomen and standing on its head when disturbed, though specific behavioral documentation for this species is limited in the provided sources.
Eleodes versatilis is a species of darkling beetle in the family Tenebrionidae, first described by Blaisdell in 1921. The genus Eleodes, commonly known as clown beetles or stink beetles, is characterized by defensive head-standing behavior when disturbed. Specific information about E. versatilis is limited; the species has been recorded in taxonomic databases but detailed natural history documentation is sparse. Members of the genus are primarily nocturnal and inhabit arid and semi-arid environments across North America.
Eleodes wenzeli is a species of darkling beetle (Tenebrionidae) described by Blaisdell in 1925. It belongs to the large genus Eleodes, commonly known as clown beetles or stink beetles due to their defensive head-standing behavior. The species is part of a taxonomically challenging complex within Eleodes that includes similar-looking species such as E. suturalis and E. hispilabris. Available occurrence records suggest limited documented observations, with 12 records in iNaturalist as of the data cutoff.
Eleusis is a genus of rove beetles in the family Staphylinidae, subfamily Osoriinae, tribe Eleusinini. Members of this genus are small, elongate beetles with reduced elytra characteristic of the family. The genus was established by Laporte de Castelnau in 1835 and contains species distributed in various regions.
Puritan tiger beetle
Ellipsoptera puritana, the Puritan tiger beetle, is a federally threatened species endemic to a highly restricted range in the northeastern United States. Adults are medium-sized, fast-running predators with distinctive cream-white marginal markings on their elytra. The species occupies a narrow ecological niche: sandy beaches and riverbanks backed by eroding cliffs or bluffs, where larvae burrow into exposed sediment faces. Its two-year life cycle involves larval development in burrows followed by brief adult emergence in mid-summer. Habitat loss from shoreline development, dam construction, and bank stabilization has severely reduced populations, prompting intensive conservation efforts including captive rearing programs.
dark firefly
Ellychnia captiosa is a species of dark firefly in the family Lampyridae. Unlike bioluminescent fireflies, members of the genus Ellychnia lack light-producing organs and are active during daylight hours. The species was described by Kenneth Fender in 1970. Dark fireflies represent a distinct ecological guild within the Lampyridae, having secondarily lost the nocturnal signaling behavior characteristic of most fireflies.
Ellychnia facula is a species of firefly in the family Lampyridae. It is currently treated as a synonym of Photinus faculus in some taxonomic databases, though the original combination under Ellychnia persists in literature. The species was described by John Lawrence LeConte in 1854 and is recorded as widespread across North America. Like other members of the genus Ellychnia, this species belongs to the 'dark firefly' group—adults that lack the light-producing organs typical of most fireflies.
Ellychnia greeni is a firefly species originally described in the genus Ellychnia but currently recognized as a synonym of Photinus greeni. The species was described by Fender in 1962 and is known from North America. Like other members of the family Lampyridae, it is a beetle with bioluminescent capabilities, though specific details about its biology remain limited in available sources.
Ellychnia irrorata is a species of firefly in the family Lampyridae, originally described by Fender in 1970. The species was formerly placed in the genus Photinus as Photinus irroratus but has since been transferred to Ellychnia. Like other members of the genus Ellychnia, this species belongs to the 'dark fireflies'—a group that lacks the light-producing organs characteristic of most fireflies. The species is part of a taxonomically complex group where species boundaries and generic placements have undergone revision.
Riffle beetles
Elmidae, commonly known as riffle beetles, is a family of aquatic beetles in the superfamily Byrrhoidea containing over 150 genera and 1,500 described species. Both adults and larvae are primarily aquatic, inhabiting fast-flowing shallow areas of streams and rivers such as riffles. Adults breathe underwater using a plastron—a microfilm of air held by microscopic hairs on their body surface that enables oxygen diffusion from the water. The family has significant value in freshwater biomonitoring due to their sensitivity to water pollution.
riffle beetles
Elminae is a subfamily of riffle beetles (family Elmidae) comprising at least 120 genera and over 1,300 described species. Members are primarily aquatic, inhabiting running water habitats across all major biogeographic regions. The subfamily exhibits considerable morphological diversity, with some genera showing pronounced secondary sexual dimorphism and miniaturization traits.
riffle beetles
Elmini is a tribe of riffle beetles within the family Elmidae, comprising over 90 genera and approximately 1,200 described species in North America. These beetles are strictly aquatic as adults and larvae, inhabiting flowing water systems. The tribe represents a major radiation within the Elmidae, with species diversity concentrated in freshwater habitats.
marsh beetles
Elodes is a genus of marsh beetles in the family Scirtidae, containing more than 60 described species. These beetles inhabit aquatic and semi-aquatic environments where they are associated with marshy vegetation and slow-moving water bodies. The genus has been subject to ecological study regarding population dynamics and seasonal abundance patterns in wetland habitats.
Elodes maculicollis is a species of marsh beetle in the family Scirtidae, described by Horn in 1880. It is native to North America and has been documented in eastern Canada including New Brunswick, Newfoundland, and Nova Scotia. The genus Elodes comprises small beetles typically associated with moist habitats. Records indicate this species is rarely encountered, with limited observational data available.
ant-like leaf beetles
Elonus is a genus of ant-like leaf beetles in the family Aderidae. The genus contains seven described species, all restricted to North America. These beetles are characterized by their compact, ant-like appearance and are among the smaller members of the family Aderidae. The genus was established by Casey in 1895.
ant-like leaf beetle
Elonus basalis is a species of ant-like leaf beetle in the family Aderidae, first described by LeConte in 1855. The species is distributed across North America, with records from Canada (Ontario, Québec) and the northeastern United States (Vermont). As a member of Aderidae, it exhibits the characteristic compact body form and ant-like appearance typical of this family of small beetles.
Elonus nebulosus is a species of ant-like leaf beetle in the family Aderidae, first described by LeConte in 1875. It is found in North America, with records from Ontario and Québec in Canada. The species exhibits the characteristic compact body form and ant-like appearance typical of Aderidae.
Elonus simplex is a species of ant-like leaf beetle in the family Aderidae, described by Werner in 1993. The species is characterized by its ant-like morphology, a trait common to members of this family. It has been recorded from both Central America and North America.
Elytrimitatrix is a genus of disteniid beetles established by Santos-Silva & Hovore in 2007, previously treated as part of the genus Distenia. The genus contains approximately 50 described species distributed primarily in the Neotropical region, with one species, E. undata, occurring broadly across eastern and central North America. The group has undergone significant taxonomic revision, with many species described since 2007. Adults are attracted to fermenting baits and ultraviolet light, and larvae develop in dead wood of various hardwoods and pine.
Elytroleptus rufipennis is a longhorn beetle (Cerambycidae) described by LeConte in 1884. It belongs to the tribe Trachyderini, a group known for often striking coloration and patterns. The species name 'rufipennis' refers to reddish wing covers. Records indicate presence in Mexico and the United States.