Melasinae
Guides
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.
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.
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.
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.
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.
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.
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.