Eucnemidae
Guides
Melasis tsugae
Melasis tsugae is a species of false click beetle in the family Eucnemidae, described by Hopping in 1926. It is known from British Columbia, Canada. Very little published information exists regarding its biology, ecology, or specific host associations.
Microrhagus
Microrhagus is a genus of false click beetles in the family Eucnemidae, tribe Dirhagini. The genus was established by Dejean in 1833 and contains Palaearctic species, including two species recently described from the Russian Far East (M. nikitskyi and M. vicarius). Members of this genus are small beetles associated with decaying wood habitats.
Microrhagus audax
Microrhagus audax is a species of false click beetle in the family Eucnemidae, described by Horn in 1886. The species belongs to a family of wood-boring beetles whose larvae develop in decaying wood and are associated with forest ecosystems. Very little specific information is available for this particular species, with most knowledge inferred from family-level characteristics.
Microrhagus breviangularis
Microrhagus breviangularis is a small beetle in the family Eucnemidae, described by Otto in 2015. Members of this family are commonly known as false click beetles. The species is known from very few observations.
Microrhagus carinicollis
Microrhagus carinicollis is a species of false click beetle in the family Eucnemidae, described by Otto in 2015. The genus Microrhagus belongs to the diverse assemblage of elateroid beetles, with members typically associated with decaying wood in forested habitats. This species is distinguished from congeners by the carinate (keeled) structure of its pronotum, as indicated by its specific epithet. Available records suggest limited documentation, with iNaturalist showing only six observations.
Microrhagus opacus
Microrhagus opacus is a species of false click beetle in the family Eucnemidae, described by Otto in 2015. The genus Microrhagus comprises small to medium-sized beetles characterized by their inability to produce the clicking sound typical of true click beetles (Elateridae), despite superficial similarities in body form. As a relatively recently described species, detailed biological information remains limited.
Nematodes
Nematodes False Click Beetles
Nematodes is a genus of false click beetles in the family Eucnemidae, tribe Nematodini. These beetles are part of the Elateriformia superfamily within the order Coleoptera. The genus name 'Nematodes' has been historically confused with nematode worms (phylum Nematoda), but refers here to a distinct group of insects. Members of this genus are characterized by their placement within the Eucnemidae, a family commonly known as false click beetles due to their resemblance to click beetles (Elateridae) while lacking the prosternal process that enables the clicking mechanism.
Nematodes collaris
Nematodes collaris is a species of beetle in the family Eucnemidae, commonly known as false click beetles. The genus Nematodes is part of the diverse beetle fauna, with species typically characterized by their elongated bodies and association with decaying wood. This species is known from very limited observations, with only two documented records on iNaturalist. Members of Eucnemidae are often found in forested habitats where their larvae develop in dead or decaying wood, contributing to nutrient cycling processes.
Nematodes penetrans
Nematodes penetrans is a species of false click beetle in the family Eucnemidae, first described by John Lawrence LeConte in 1852. The genus name 'Nematodes' refers to the thread-like or worm-like appearance of these beetles, not to nematode worms. As a member of the Eucnemidae, it belongs to a group of beetles commonly known as false click beetles, which are distinguished from true click beetles (Elateridae) by their reduced ability to produce the characteristic clicking sound. The species has been documented in eastern Canada and parts of the northeastern United States.
Nematodes rugosipennis
Nematodes rugosipennis is a species of false click beetle in the family Eucnemidae. The genus Nematodes is part of a group 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. Very little specific information is available for this particular species. The family Eucnemidae contains numerous species that are often associated with decaying wood and forest habitats.
Nematodini
Nematodini is a tribe of false click beetles (family Eucnemidae) established by Leiler in 1976. Members of this tribe are classified within the subfamily Macraulacinae and share morphological characteristics related to their elongated body form and reduced elytral striation patterns. The tribe is distinguished from related groups by specific antennal and prosternal features.
Nematodinus
Nematodinus is a genus of false click beetles (family Eucnemidae) described by Lea in 1919. Members of this genus belong to the tribe Dirhagini within the subfamily Melasinae. The genus is characterized by morphological features typical of the Dirhagini, including antennae with distinct club segments. Information on this genus remains limited, with few documented observations.
Nematodinus lanieri
Nematodinus lanieri is a species of beetle in the family Eucnemidae, commonly known as false click beetles. The genus Nematodinus is poorly documented in scientific literature, and this species is known from very few observations. Eucnemidae beetles are generally associated with decaying wood in forest habitats. The species name honors an individual, likely a collector or entomologist, but the etymology is not formally documented.
Onichodon
Onichodon is a genus of beetles in the family Eucnemidae (false click beetles), established by Newman in 1838. The genus belongs to the subfamily Macraulacinae and tribe Macraulacini. Mature larvae of at least three Nearctic species have been described, though detailed biological information remains limited. Adults are poorly documented compared to the larval stage.
Onichodon downiei
Onichodon downiei is a species of false click beetle described by Muona in 2000. The species is known from Ontario and Québec in Canada. As a member of the family Eucnemidae, it belongs to a group of beetles commonly associated with decaying wood and forest habitats. Very few observations of this species have been documented.
Palaeoxenus dohrnii
Dohrn's Elegant Eucnemid Beetle
Palaeoxenus dohrnii is a rarely collected beetle in the family Eucnemidae, commonly known as false click beetles. The species is known from very few observations, with only seven records documented on iNaturalist. Members of Eucnemidae are characterized by their inability to produce the clicking sound that defines true click beetles (Elateridae), despite similar body forms.
Perothops
beech-tree beetles, perothopid beetles
Perothops is a genus of false click beetles (family Eucnemidae) and the sole genus in the monotypic subfamily Perothopinae. The genus contains three species: P. witticki, P. cervinus, and P. muscidus. Adults are small (10–18 mm), dark-colored beetles found in forests across the United States. The genus was historically treated as a separate family before being reclassified into Eucnemidae in 1993.
Perothops muscidus
Perothops muscidus is a species of false click beetle in the family Eucnemidae. The genus Perothops is a small, distinctive group within this family, characterized by unusual morphological features. Very few observations of this species exist in public databases, reflecting either genuine rarity or cryptic habits.
Protofarsus
Protofarsus is a genus of false click beetles (family Eucnemidae) established by Muona in 2000. It belongs to a family characterized by larvae that develop in decaying wood. The genus is poorly known, with minimal published information and very few documented observations.
Protofarsus caribicus
Protofarsus caribicus is a species of false click beetle in the family Eucnemidae. The genus Protofarsus is endemic to the Caribbean region, with species known from the Greater Antilles. Members of Eucnemidae are characterized by their inability to produce the clicking sound typical of true click beetles (Elateridae), despite similar body forms. The species is known from Cuba and is distinguished by features of the pronotum and elytra.
Proutianus
Proutianus is a genus of false click beetles (family Eucnemidae) established by Muona in 1993. It belongs to the tribe Proutianini, a group of eucnemids characterized by reduced or modified hind wings that prevent the typical clicking mechanism found in related families. The genus is part of the diverse Elateroidea superfamily, which includes numerous beetle lineages with varied ecological adaptations.
Proutianus americanus
A species of false click beetle in the family Eucnemidae, native to western North America. The species was described by Horn in 1872. Very little published information exists on its biology or ecology, and it appears to be rarely encountered or reported in entomological literature.
Rhagomicrus bonvouloiri
Rhagomicrus bonvouloiri is a species of false click beetle (Coleoptera: Eucnemidae) in the subfamily Melasinae. The larva has been formally described from the Nearctic region, with biological notes provided in a dedicated study. Adult records from Ontario, Canada suggest a limited known distribution. The species is poorly represented in public observation databases, with few documented occurrences.
Sarpedon scabrosus
Sarpedon scabrosus is a species of false click beetle in the family Eucnemidae, first described by Bonvouloir in 1875. The genus Sarpedon belongs to a group of beetles commonly known as false click beetles due to their resemblance to true click beetles (Elateridae) while lacking the functional clicking mechanism. Species in this family are typically associated with decaying wood and forest habitats. S. scabrosus has been recorded from multiple provinces in Canada including British Columbia, Ontario, and Quebec.
Schizophilus
Schizophilus is a genus of false click beetles (family Eucnemidae) established by Bonvouloir in 1871. It is the type genus of the subfamily Schizophilinae, a small group within the Elateroidea superfamily. The genus contains relatively few described species and remains poorly known in terms of biology and ecology. Specimens are rarely collected, contributing to limited understanding of their natural history.
Serrifornax
Serrifornax is a genus of beetles in the family Eucnemidae, established by Fleutiaux in 1926. The genus belongs to the order Coleoptera and is part of the infraorder Elateriformia. Records indicate at least 9 observations on iNaturalist, though detailed biological information appears limited in accessible sources.
Stethon
Stethon is a genus of beetles in the family Eucnemidae, first described by LeConte in 1866. Members of this genus are classified within the false click beetles, a group characterized by their inability to produce the clicking sound typical of true click beetles (Elateridae). The genus is part of the diverse beetle fauna of North America.
Thalpius undescribed-two
Thalpius undescribed-two is an undescribed species in the click beetle family Eucnemidae, known from limited material. It belongs to a genus of false click beetles characterized by their inability to produce the clicking sound of true click beetles (Elateridae). The species awaits formal taxonomic description and is currently recognized only from a provisional designation used in collection databases.
Thambus
Thambus is a genus of false click beetles (family Eucnemidae) described by Bonvouloir in 1871. Members of this genus are small to medium-sized beetles characterized by their elongated bodies and reduced or non-functional clicking mechanism compared to true click beetles (Elateridae). The genus is relatively poorly documented, with limited published information on species diversity and biology.
Trichochrous ferrugineus
Trichochrous ferrugineus is a species of false click beetle in the family Eucnemidae, a group of saproxylic beetles associated with decaying wood. The genus Trichochrous comprises small to medium-sized beetles characterized by their elongated bodies and reduced or non-functional clicking mechanism compared to true click beetles (Elateridae). Species in this genus are typically found in forested habitats where they develop in dead or dying hardwoods.
Vanhornia
Vanhornia is a genus of small parasitoid wasps comprising four described species. It is the sole genus in the family Vanhorniidae, a group formerly placed in Proctotrupoidea but now classified in Diaprioidea. Species are known from North America, the Palearctic, East Asia, and Southeast Asia. All members are parasitoids of beetle larvae in the family Eucnemidae.
Vanhorniidae
Vanhorniidae is a small family of parasitoid wasps in the superfamily Proctotrupoidea, containing the single genus Vanhornia with six recognized species worldwide. The family is characterized by highly specialized morphology including exodont mandibles, low antennal insertion, and an exceptionally long ovipositor that projects anteriorly from its base and is housed in a ventral groove. Species are koinobiont endoparasitoids of wood-boring beetle larvae in the family Eucnemidae (false click beetles). The North American species Vanhornia eucnemidarum was long considered rare due to limited collection records, but recent data integration revealed a much broader distribution than previously recognized.
Vitellius
Vitellius is a genus of click beetles in the family Eucnemidae, established by Bonvouloir in 1871. The genus belongs to the order Coleoptera and is part of the false click beetle family, which is distinguished from the true click beetles (Elateridae) by certain morphological features. The genus name is derived from Aulus Vitellius, a Roman emperor who ruled briefly in 69 AD during the Year of the Four Emperors. As of current records, the genus has 14 observations documented on iNaturalist, though detailed biological information remains limited.
Xylobiini
Xylobiini is a tribe of false click beetles within the family Eucnemidae, subfamily Melasinae. Members of this tribe are associated with decaying wood habitats and are part of the diverse elateriform beetle fauna. The tribe was established by Reitter in 1911 and includes genera characterized by particular morphological features of the prosternal process and antennae. Xylobiini represents one of several tribes within the predominantly saproxylic subfamily Melasinae.
Xylophilus
Xylophilus is a genus of beetles in the family Eucnemidae, first described by Mannerheim in 1823. The genus belongs to the tribe Xylobiini within the subfamily Melasinae. Eucnemidae, commonly known as false click beetles, are a family of elateroid beetles characterized by larvae that develop in decaying wood. The genus name Xylophilus (from Greek xylon "wood" and philos "loving") reflects an association with woody substrates. The name Xylophilus is also used for a bacterial genus (Willems et al. 1987), but this taxon record refers to the beetle genus.
Xylophilus cylindriformis
Xylophilus cylindriformis is a species of false click beetle (family Eucnemidae) in the order Coleoptera. The species is known from a single observation record, indicating extreme rarity or limited detection in the field. Members of the genus Xylophilus are typically associated with dead or decaying wood, where larvae develop as saproxylic feeders. Adults are generally small to medium-sized beetles with elongated, cylindrical body forms.