Scydmaeninae
Guides
Catalinus
Catalinus is a genus of minute rove beetles (family Staphylinidae, subfamily Scydmaeninae) established by Casey in 1897. Members of this genus belong to the tribe Stenichnini, a group of small beetles often associated with forest floor habitats and microhabitats such as leaf litter and decaying wood. The genus is poorly documented in public sources, with only three observations recorded on iNaturalist as of the knowledge cutoff.
Catalinus angustus
Catalinus angustus is a species of minute rove beetle in the family Staphylinidae, subfamily Scydmaeninae. These beetles are among the smallest staphylinids, typically associated with leaf litter and decaying organic matter in forested habitats. The genus Catalinus belongs to the tribe Stenichnini, a group characterized by their small size and specialized ecological roles in decomposition systems. Records indicate this species occurs in California, USA.
Cephenniini
Cephenniini is a tribe of minute rove beetles within the subfamily Scydmaeninae (Staphylinidae). The tribe was first described by Reitter in 1882 and contains the genera Cephennodes and Cephennomicrus. These beetles are distributed across the Afrotropical, Oriental, and Australasian regions, with records from Africa, Madagascar, Indian Ocean islands, Southeast Asia, China, Taiwan, Japan, Papua New Guinea, Australia, and Pacific islands. Recent taxonomic work has documented first records in South Africa, Christmas Island, and the Philippines.
Cephennium
Cephennium is a genus of minute rove beetles in the family Staphylinidae, subfamily Scydmaeninae, first described by Müller and Kunze in 1822. The genus is predominantly western European in distribution but has been recorded across Europe, Northern America, the Middle East, and as far east as Kyrgyzstan. Recent taxonomic work has revealed substantial undescribed diversity, particularly in Turkey where 25 named species are now recognized. The genus has been introduced to North America via port cities, with C. gallicum documented from Halifax, Nova Scotia.
Cephennium aridum
Cephennium aridum is a species of minute rove beetle in the family Staphylinidae, subfamily Scydmaeninae. It was described in 2009 from California and is distinguished by its association with arid habitats. The specific epithet "aridum" refers to the dry conditions of its type locality. Members of this genus are among the smallest beetles, often less than 2 mm in length.
Cephennodes
Cephennodes is a genus of minute rove beetles in the subfamily Scydmaeninae, tribe Cephenniini. First recorded in South Africa in 2013 with four new species described from KwaZulu-Natal Province. The genus has a broader distribution across the continental Afrotropical region. Members of this genus are small, compact beetles adapted to microhabitats such as leaf litter and soil.
Cephennodes corporosus
Cephennodes corporosus is a species of rove beetle in the family Staphylinidae, subfamily Scydmaeninae. Originally described by John Lawrence LeConte in 1852 under the genus Sphex (a wasp genus), this species has since been reclassified to the beetle genus Cephennodes. It belongs to a group of minute rove beetles, with most members of this subfamily measuring less than 2 mm in length. The species is known from scattered records in the eastern and central United States.
Chevrolatia amoena
Chevrolatia amoena is a species of minute rove beetle in the family Staphylinidae, subfamily Scydmaeninae. The species was described by John Lawrence LeConte in 1866. It belongs to the tribe Chevrolatiini, a group of small beetles often referred to as ant-like stone beetles due to their compact form and behavior. The genus Chevrolatia is named after the French entomologist Louis Alexandre Auguste Chevrolat.
Euconnus montanus
Euconnus montanus is a species of minute rove beetle in the family Staphylinidae, subfamily Scydmaeninae. The species was described in 2021 by Stephan & O'Keefe. Scydmaenine beetles are commonly known as ant-like stone beetles due to their small size and compact body form. Members of the genus Euconnus are among the smallest beetles, typically measuring less than 2 mm in length.
Euconnus pecki
Euconnus pecki is a species of ant-like stone beetle (family Staphylinidae, subfamily Scydmaeninae) described in 2021 by Stephan and Chandler. It belongs to a large genus of minute beetles characterized by compact bodies and reduced wing venation. The species is known from scattered localities in the south-central United States.
Euconnus salinator
Euconnus salinator is a minute rove beetle in the family Staphylinidae, subfamily Scydmaeninae. Members of this genus are among the smallest beetles, often measuring under 2 mm. The species has been recorded across eastern North America from Canada to Florida. Scydmaenine beetles are primarily associated with leaf litter and soil habitats where they prey on oribatid mites.
Euthiconus
Euthiconus is a genus of minute rove beetles in the family Staphylinidae, subfamily Scydmaeninae. The genus was established by Reitter in 1882 and contains five described species. These beetles are found in Europe and North America, with records from Denmark, Norway, and Sweden confirmed. The group belongs to the tribe Eutheiini within the ant-like stone beetle subfamily.
Leptoscydmus
Leptoscydmus is a genus of minute rove beetles in the family Staphylinidae, subfamily Scydmaeninae. Members of this genus belong to the tribe Leptoscydmini, a group of small beetles adapted to life in soil and leaf litter microhabitats. The genus was established by Thomas Lincoln Casey in 1897 and contains species distributed in North America. These beetles are part of the diverse scydmaenine fauna that plays roles in decomposer food webs.
Leptoscydmus cavifrons
Leptoscydmus cavifrons is a species of minute rove beetle in the family Staphylinidae, subfamily Scydmaeninae. It was described by Thomas Lincoln Casey in 1897. The species belongs to the tribe Leptoscydmini, a group of small beetles often referred to as ant-like stone beetles due to their morphology and behavior. Records indicate presence in the eastern United States.
Microscydmus
Microscydmus is a genus of minute rove beetles in the subfamily Scydmaeninae, characterized by their small size and reduced elytra typical of the family Staphylinidae. The genus was established by Saulcy & Croissandeau in 1893 and contains species distributed across Europe, Australia, and North America. Taxonomic revisions have transferred some previously assigned species to other genera, such as Microscydmus trianguliceps to Afroeudesis. Members of this genus belong to the tribe Stenichnini within the ant-like stone beetle subfamily.
Papusus
Papusus is a genus of minute rove beetles in the family Staphylinidae, subfamily Scydmaeninae, tribe Papusini. The genus was described by Casey in 1897 and is the sole member of its tribe. These beetles are among the smallest staphylinids and are associated with forest floor habitats. The genus is rarely encountered, with extremely limited observational records.
Scydmaenus
ant-like stone beetles
Scydmaenus is a genus of minute rove beetles in the subfamily Scydmaeninae, commonly called ant-like stone beetles. The genus has nearly cosmopolitan distribution with species documented across Europe, Asia, Africa, Australia, and other regions. Members are small, slow-moving beetles typically found in soil and leaf litter habitats. Some species have been documented as predators of soft-bodied arthropods, though earlier literature suggested specialization on armored mites.
Stenichnus
Stenichnus is a genus of minute rove beetles in the subfamily Scydmaeninae, characterized by distinctive larval morphology with complex chaetotaxy (setal patterns). The genus is distributed across the Palaearctic region with some Nearctic representatives. Larvae have been studied through shed skins and rearing to adults, revealing significant morphological variation between species that complicates homology assessments.
Veraphis
Veraphis is a genus of minute rove beetles in the subfamily Scydmaeninae, family Staphylinidae. The genus is rarely collected and was historically considered to have its greatest diversity in Northern Europe, but recent taxonomic work has revealed Japan to be the center of diversity with at least fourteen species. Additional species occur in China, Korea, and other parts of the East Palaearctic region. The grammatical gender of Veraphis is feminine.