Eucnemidae
Guides
Absensiugum
Absensiugum is a genus of beetles in the family Eucnemidae, commonly known as false click beetles. Members of this genus are part of a group characterized by larvae that develop in decaying wood. The genus is relatively obscure with limited documented observations.
Absensiugum teres
Absensiugum teres is a species of beetle in the family Eucnemidae, commonly known as false click beetles. The genus Absensiugum was established to accommodate species previously placed in other eucnemid genera. Members of Eucnemidae are characterized by their inability to produce the clicking sound that defines their relatives in Elateridae (true click beetles), despite similar body forms. The species name 'teres' refers to the smooth, rounded body shape.
Adelothyreus
Adelothyreus is a genus of false click beetles (family Eucnemidae) established by Horn in 1890. The genus is rarely encountered, with only two observations documented on iNaturalist. Members of Eucnemidae are characterized by their inability to produce the clicking sound typical of true click beetles (Elateridae), despite superficial similarities in body form. The genus Adelothyreus appears to be poorly represented in collections and literature.
Anelastes californicus
Anelastes californicus is a species of false click beetle in the family Eucnemidae. The species is known from California and is represented by very few observations in natural history collections. Eucnemidae are a family of elateroid beetles commonly known as false click beetles or eucnemid beetles, distinguished from true click beetles (Elateridae) by subtle morphological differences.
Anelastes desertorum
Anelastes desertorum is a species of false click beetle in the family Eucnemidae. The specific epithet 'desertorum' suggests an association with desert environments. Like other members of Eucnemidae, it belongs to the click beetle superfamily Elateroidea but lacks the clicking mechanism characteristic of true click beetles (Elateridae).
Asiocnemis
Asiocnemis is a genus of false click beetles (family Eucnemidae) established by Mamaev in 1976. The genus is rarely collected, with only seven observations recorded on iNaturalist. Members of Eucnemidae are characterized by larvae that develop in decaying wood and adults that are often found in forest habitats. The genus is distinguished from related taxa by features of the prosternal process and antennal structure.
Asiocnemis basalis
Asiocnemis basalis is a species of false click beetle in the family Eucnemidae, described by John Lawrence LeConte in 1866. It is a small beetle species with limited documented information. Records indicate occurrence in British Columbia, Canada.
Asiocnemis hospitalis
Asiocnemis hospitalis is a species of false click beetle in the family Eucnemidae, originally described from British Columbia in 1904. The genus Asiocnemis is small and poorly known, with limited published information on its biology. Records indicate this species occurs in western North America, though detailed ecological data remain scarce.
Asiocnemis nitens
Asiocnemis nitens is a species of false click beetle in the family Eucnemidae, described by Horn in 1886. It belongs to a genus of beetles characterized by their distinctive morphology within the Eucnemidae family. The species has been recorded from British Columbia, Canada, with very limited observational data available.
Deltometopus
Deltometopus is a genus of false click beetles (Coleoptera: Eucnemidae) in the subfamily Macraulacinae and tribe Macraulacini. The genus is distinguished by its Nearctic distribution and includes species such as Deltometopus amoenicornis. Larval morphology has been described for at least one species, indicating development in decaying wood. The genus is accepted in coleopteran taxonomy with authorship attributed to Bonvouloir (1871), though a later homonym was proposed by Williams (1977) in Hemiptera.
Deltometopus amoenicornis
Lovely-horned False Click Beetle
A Nearctic species of false click beetle in the family Eucnemidae. The mature larva has been described, though detailed biological information remains limited. Adults are occasionally encountered and photographed by naturalists.
Deltometopus baranowskii
Deltometopus baranowskii is a species of false click beetle in the family Eucnemidae. The species is known from a single iNaturalist observation, indicating it is rarely encountered or potentially understudied. Members of the genus Deltometopus are characterized by their elongated body form and reduced click mechanism compared to true click beetles (Elateridae). The specific epithet honors an individual, likely a coleopterist or naturalist.
Dendrocharis
Dendrocharis is a genus of Asian click beetle allies in the family Eucnemidae, established by Félix Guérin-Méneville in 1843. It is the type genus of the tribe Dendrocharini. The genus contains eight described species distributed across Southeast Asia.
Dirhagini
Dirhagini is a tribe of false click beetles within the family Eucnemidae, subfamily Melasinae. The tribe is distributed across the Palaearctic and Nearctic regions. Recent taxonomic work has clarified nomenclature and species boundaries, including descriptions of new species from the Russian Far East and redescriptions of poorly known taxa. Members of this tribe are characterized by specific larval morphological traits that distinguish them from other Eucnemidae.
Dirrhagofarsus
false click beetle
Dirrhagofarsus is a genus of false click beetles in the family Eucnemidae, established by Fleutiaux in 1935. Species occur in Europe and North America. The genus includes at least three recognized species: D. attenuatus, D. ernae, and D. lewisi. D. lewisi was recently documented in the United States, representing a new country record.
Dirrhagofarsus ernae
Dirrhagofarsus ernae is a species of false click beetle (family Eucnemidae) described in 2014 from the United States. The species is known from the conterminous 48 United States based on distribution records. As a member of Eucnemidae, it belongs to a family of beetles characterized by larvae that develop in decaying wood. The genus Dirrhagofarsus is small and poorly known, with this species representing one of few documented occurrences.
Dirrhagofarsus modestus
Dirrhagofarsus modestus is a species of false click beetle in the family Eucnemidae, described by Fleutiaux in 1923. The species is relatively poorly known, with limited published information on its biology and ecology. It belongs to a family of beetles whose larvae typically develop in decaying wood, though species-level details remain undocumented.
Dirrhagofarsus unicolor
Dirrhagofarsus unicolor is a species of false click beetle (family Eucnemidae) described by Hisamatsu in 1960. The species was originally described as a form of Dirrhagus modestus before being elevated to species status. As a member of Eucnemidae, it belongs to a family of beetles commonly known as false click beetles due to their resemblance to Elateridae (true click beetles), though they lack the clicking mechanism. Very little specific biological information has been published for this species.
Dromaeolini
Dromaeolini is a tribe of false click beetles (family Eucnemidae) established by Beaulieu in 1919. The tribe is currently treated as a synonym within the subfamily Macraulacinae. Eucnemidae are characterized by their inability to perform the clicking jump mechanism found in true click beetles (Elateridae), despite superficial similarities in body form. Members of this group are typically small to medium-sized beetles associated with decaying wood.
Dromaeolus badius
Dromaeolus badius is a species of click beetle in the family Eucnemidae. The species was described by Melsheimer in 1845. It has been recorded in the Canadian provinces of Ontario and Québec. As a member of Eucnemidae, it belongs to a group of beetles commonly known as false click beetles, which are typically associated with decaying wood and forest habitats.
Dromaeolus californicus
Dromaeolus californicus is a species of false click beetle in the family Eucnemidae, described by Bonvouloir in 1875. The species is known from western North America, with distribution records from British Columbia, Canada. Like other members of the family Eucnemidae, it belongs to the elateroid beetles and is characterized by the inability to produce the clicking sound typical of true click beetles (Elateridae). The genus Dromaeolus is part of a group of eucnemids often associated with decaying wood and forest habitats.
Dromaeolus cylindricollis
Dromaeolus cylindricollis is a species of false click beetle in the family Eucnemidae. The species was described by Thomas Say in 1839. It is one of the few species in the genus Dromaeolus, which comprises small to medium-sized beetles characterized by their inability to produce the clicking sound typical of their close relatives in Elateridae. The genus name refers to this reduced clicking ability (from Greek 'dromaios' meaning running or racing, perhaps alluding to their active movement rather than defensive clicking).
Dromaeolus harringtoni
Dromaeolus harringtoni is a species of false click beetle in the family Eucnemidae, described by Horn in 1886. The genus Dromaeolus belongs to a group of beetles commonly known as false click beetles, which are distinguished from true click beetles (Elateridae) by their inability to produce the characteristic clicking sound. Very little specific information is documented about this particular species beyond its taxonomic classification and geographic distribution in eastern Canada.
Dromaeolus turnbowi
Dromaeolus turnbowi is a species of false click beetle in the family Eucnemidae. The species is known from only three iNaturalist observations, indicating it is either rare, poorly sampled, or recently described. As a member of Eucnemidae, it belongs to a group of beetles commonly known as false click beetles, which are distinguished from true click beetles (Elateridae) by their inability to produce the characteristic clicking sound. The genus Dromaeolus contains species that are typically associated with decaying wood.
Dyscharachthis
Dyscharachthis is a genus of false click beetles in the family Eucnemidae, established by Blackburn in 1900. It belongs to the monotypic tribe Dyscharachthini. The genus is poorly known, with minimal published information on its biology and morphology. Based on family characteristics, members are likely associated with decaying wood habitats.
Entomophthalmus
Entomophthalmus is a genus of false click beetles (family Eucnemidae) established by Bonvouloir in 1871. Members of this genus belong to the subfamily Melasinae and tribe Dirhagini. The genus contains at least one described Nearctic species, E. rufiolus, whose larval biology has been documented. Adult Eucnemidae are generally associated with decaying wood and fungal habitats.
Epiphanini
Epiphanini is a tribe of false click beetles (family Eucnemidae) established by Muona in 1993. Members belong to the subfamily Melasinae, a group characterized by reduced clicking mechanisms compared to true click beetles (Elateridae). The tribe contains genera of small to medium-sized beetles with larvae that develop in decaying wood. Knowledge of this tribe remains limited due to the cryptic habits of its members and taxonomic challenges within Eucnemidae.
Epiphanis
false click beetles
Epiphanis is a genus of false click beetles in the family Eucnemidae, established in 1829. It is the type genus of the tribe Epiphanini. The genus includes both extant and extinct species distributed across Europe, North America, and Southeast Asia.
Epiphanis cornutus
false click beetle
Epiphanis cornutus is a species of false click beetle in the family Eucnemidae. The species occurs across Europe, including the British Isles, and in North America. As a member of Eucnemidae, it belongs to a group of beetles commonly known as false click beetles, which are distinguished from true click beetles (Elateridae) by subtle morphological differences. The specific epithet 'cornutus' refers to horned or horn-like features, though detailed morphological descriptions of this particular species are limited in available sources.
Eucnemis
Eucnemis is a genus of click beetle allies in the family Eucnemidae, established by August Ahrens in 1812. The genus is predominantly Palaearctic in distribution, with at least four described species. Eucnemis capucina, the type species, is a rare cavity-dwelling beetle associated with old hollow trees in deciduous forests. The genus is notable for its saproxylic lifestyle and conservation significance in European forests.
Euryptychini
Euryptychini is a tribe of click beetles within the family Eucnemidae, established by Mamaev in 1976. Members of this tribe are classified in the subfamily Macraulacinae and share characteristics typical of the false click beetles, including reduced or modified clicking mechanisms compared to true click beetles (Elateridae). The tribe is relatively small and poorly documented in the scientific literature, with limited biological and ecological information available.
Euryptychus
Euryptychus is a genus of false click beetles (family Eucnemidae) established by John Lawrence LeConte in 1852. It belongs to the tribe Euryptychini within the subfamily Macraulacinae. The genus comprises small to medium-sized beetles characterized by their distinctive antennal and tarsal morphology. Very few observations exist in public databases, with only 10 records on iNaturalist as of the source data.
Euryptychus ulkei
Euryptychus ulkei is a species of false click beetle in the family Eucnemidae. Very little published information exists about this species. The genus Euryptychus comprises small to medium-sized eucnemids, and species in this family are typically associated with dead or decaying wood where larvae develop as saproxylic feeders. Adults are generally collected by beating vegetation or attracted to light.
Fornax bicolor
Fornax bicolor is a species of false click beetle in the family Eucnemidae, first described by Melsheimer in 1845. The species epithet 'bicolor' suggests a two-toned coloration pattern. As a member of the Eucnemidae, it belongs to a family of beetles commonly known as false click beetles, which are characterized by their inability to produce the clicking sound that true click beetles (Elateridae) use for righting themselves. The genus Fornax contains species that are typically associated with decaying wood and forest habitats.
Fornax floridana
Fornax floridana is a species of false click beetle in the family Eucnemidae. Very little information is publicly available about this species beyond its taxonomic classification. The genus Fornax contains species commonly known as false click beetles, which are characterized by their inability to produce the clicking sound that defines true click beetles (Elateridae).
Fornax knulli
Fornax knulli is a species of false click beetle in the family Eucnemidae. The genus Fornax belongs to a group of beetles commonly known as false click beetles, which resemble true click beetles (Elateridae) but lack the prosternal process that enables the characteristic clicking mechanism. Species in this family are typically associated with decaying wood and forest habitats. The specific epithet "knulli" honors American coleopterist Joseph N. Knull (1879-1964), who described numerous North American beetle species.
Fornax lucidicollis
Fornax lucidicollis is a species of click beetle in the family Eucnemidae. The genus Fornax is part of the false click beetles, a group distinguished from true click beetles (Elateridae) by their inability to produce the characteristic clicking sound. The specific epithet "lucidicollis" refers to the shiny or polished appearance of the pronotum. Species in this genus are generally small to medium-sized beetles associated with decaying wood and forest habitats.
Fornax melsheimeri
Fornax melsheimeri is a species of false click beetle in the family Eucnemidae. Members of this family are characterized by their inability to produce the clicking sound that defines true click beetles (Elateridae), despite similar body plans. The genus Fornax contains multiple North American species, though detailed species-level documentation remains limited. This species was named in honor of the early American entomologist Frederick Ernst Melsheimer.
Hemiopsida
Hemiopsida is a genus of beetles in the family Eucnemidae, established by MacLeay in 1873. The genus is classified as doubtful in GBIF, indicating taxonomic uncertainty regarding its validity or circumscription. Eucnemidae, commonly known as false click beetles, are a family of elateroid beetles characterized by larvae that develop in decaying wood. Hemiopsida has minimal documentation in major biodiversity databases, with only 13 observations recorded on iNaturalist.
Hylis frontosus
Hylis frontosus is a Nearctic false click beetle (Eucnemidae: Melasinae) native to eastern North America. The species was redescribed in 2022 alongside other Nearctic Hylis species to facilitate improved identification. New distribution records document its first occurrence in Canada (Quebec) and range extensions to Arkansas and Virginia in the United States. It is one of four Nearctic Hylis species included in a diagnostic imaging study and identification key.
Hylis terminalis
Hylis terminalis is a Nearctic species of false click beetle (family Eucnemidae, subfamily Melasinae). It is one of six Hylis species recorded from the Nearctic region and was included in a 2024 taxonomic revision that provided imaging and diagnostic characters to distinguish it from congeners including H. frontosus, H. olexai, and the newly described H. delicatus. The species is known from eastern and central Canada and the United States.
Hylocharini
Hylocharini is a tribe of click beetles within the family Eucnemidae, subfamily Melasinae. The group was established by Jacquelin du Val in 1859. Members of this tribe are characterized by features of the adult and larval morphology that distinguish them from other eucnemid tribes. The tribe is relatively small and poorly documented in published literature.
Isarthrus calceatus
Isarthrus calceatus is a species of false click beetle in the family Eucnemidae, described by Thomas Say in 1839. The genus Isarthrus contains relatively small, slender eucnemids. Members of this family are distinguished from true click beetles (Elateridae) by their inability to produce the characteristic clicking sound. I. calceatus has been documented in eastern Canada.
Isarthrus rufipes
Isarthrus rufipes is a species of false click beetle in the family Eucnemidae, first described by Melsheimer in 1844. It belongs to a poorly studied group of beetles whose larvae are typically associated with decaying wood. The species has been recorded in eastern Canada, specifically New Brunswick and Ontario, with very few documented observations overall.
Isorhipis
false click beetles
Isorhipis is a genus of beetles in the family Eucnemidae, commonly known as false click beetles. The genus contains at least six described species distributed across Europe, Japan, and North America. Recent taxonomic revisions have revealed cryptic diversity within the genus, including the description of new species such as Isorhipis bicolor in 2024. These beetles are part of ongoing research into the classification and diversity of Eucnemidae.
Isorhipis bicolor
Isorhipis bicolor is a species of false click beetle in the family Eucnemidae. Like other members of this family, it belongs to the coleopteran group commonly referred to as "false click beetles," which are morphologically similar to true click beetles (Elateridae) but lack the prosternal process that enables the clicking mechanism. The genus Isorhipis contains multiple species, including the more commonly encountered I. obliqua, with which I. bicolor shares morphological similarities. Specimens of this species have been documented in entomological collections and have contributed to taxonomic revisions of the Eucnemidae family.
Isorhipis nubila
Isorhipis nubila is a species of false click beetle in the family Eucnemidae. It was described as a new species during a revision of the genus Isorhipis. The species was recognized among specimens previously identified as the common Isorhipis obliqua, representing a cryptic species distinguished through detailed taxonomic revision. Specimens of this species have been collected in the Cincinnati, Ohio area.
Isorhipis obliqua
false click beetle
Isorhipis obliqua is a species of false click beetle in the family Eucnemidae. It is one of the more common species in its genus and has been documented in eastern Canada. The species was described by Thomas Say in 1839. Specimens have contributed to taxonomic revisions of Eucnemidae, helping researchers distinguish cryptic species within this poorly studied beetle family.
Isorhipis ruficornis
false click beetle
Isorhipis ruficornis is a species of false click beetle in the family Eucnemidae. The species was described by Thomas Say in 1823. It is one of several North American species in the genus Isorhipis, which are being actively revised by entomologists. The specific epithet "ruficornis" refers to the reddish coloration of the antennae.
Melasinae
false click beetles
Melasinae is a subfamily of false click beetles in the family Eucnemidae, containing approximately 15 genera and at least 30 described species. The subfamily includes several tribes: Calyptocerini, Ceballosmelasini, Dirhagini, Epiphanini, Hylocharini, Melasini, Neocharini, and Xylobiini. Genera within Melasinae include Melasis, Hylis, Epiphanis, Xylophilus, and Isorhipis. Some species, such as Hylis olexai, have established adventive populations in the Nearctic region after originating from Western and Central Europe.