Staphylinidae
Guides
Tetartopeus niger
Tetartopeus niger is a species of rove beetle in the family Staphylinidae, first described by J.L. LeConte in 1863. It belongs to the tribe Lathrobiini within the subfamily Paederinae. The species has a broad trans-Pacific distribution, occurring across northern North America and East Asia.
Tetartopeus tetricus
Tetartopeus tetricus is a species of rove beetle in the family Staphylinidae, described by Casey in 1905. It belongs to the genus Tetartopeus, a group within the subfamily Paederinae. The species has a broad distribution across eastern North America, with records extending from Canada through the United States to the Caribbean.
Texamaurops
Texamaurops is a genus of small rove beetles (Staphylinidae: Pselaphinae) established by Barr & Steeves in 1963. The genus contains at least one described species, Texamaurops reddelli, commonly known as the Kretschmarr Cave mold beetle. Members of this genus are associated with cave environments and belong to the diverse tribe Batrisini within the ant-loving beetle subfamily Pselaphinae.
Texamaurops reddelli
Kretschmarr Cave Mold Beetle
Texamaurops reddelli is a small, eyeless cave-dwelling beetle in the family Staphylinidae, subfamily Pselaphinae. It is known from a single cave system in Texas and is one of the most narrowly distributed cave beetles in North America. The species was described in 1963 and is considered vulnerable due to its restricted range and habitat specificity. Like other pselaphine beetles, it likely feeds on fungal hyphae and organic detritus in humid cave microhabitats.
Thecturota
Thecturota is a genus of rove beetles in the family Staphylinidae, subfamily Aleocharinae, and tribe Homalotini. The genus was established by Casey in 1893. Species are recorded from Europe and North America, with specific documentation from Denmark, Norway, and Sweden. The genus includes at least two described species: Thecturota capito Casey, 1893 (the type species) and Thecturota antillarum Pace, 1987.
Thecturota capito
Thecturota capito is a species of rove beetle in the family Staphylinidae, subfamily Aleocharinae. It was described by Casey in 1893. This small beetle belongs to the tribe Homalotini, a group characterized by compact body forms and association with decaying organic matter. The species has been recorded in limited numbers across parts of North America.
Thesiastes fossulatus
Thesiastes fossulatus is a species of ant-loving beetle in the family Staphylinidae, subfamily Pselaphinae. It is a small rove beetle known from scattered records across the eastern and central United States. Members of this genus are associated with leaf litter and soil habitats. The species was described by Brendel in 1890.
Thesium cavifrons
A small rove beetle in the family Staphylinidae, subfamily Pselaphinae. The genus Thesium belongs to the tribe Trichonychini, a diverse group of minute beetles often associated with leaf litter and soil habitats. The species epithet 'cavifrons' refers to a hollowed or concave frontal region of the head.
Thinusa
Thinusa is a genus of small rove beetles (family Staphylinidae) inhabiting intertidal marine environments. The genus contains at least two described species: Thinusa fletcheri and T. maritima. Based on morphological characters including maxillary structure and abdominal tergite shape, Thinusa is classified in the tribe Athetini rather than Phytosini.
Thinusa fletcheri
Thinusa fletcheri is an intertidal rove beetle in the family Staphylinidae. It was described by Casey in 1906 and is one of several species in the genus Thinusa. The genus was revised taxonomically in 1997, with T. fletcheri redescribed and lectotype designated from Casey's syntype series.
Thoracophorini
unmargined rove beetles
Thoracophorini is a tribe of small rove beetles within the subfamily Osoriinae, characterized by the absence of pronotal margins. The tribe contains at least three genera—Clavilispinus, Nacaeus, and Thoracophorus—with approximately six described species. These beetles belong to the diverse family Staphylinidae, one of the largest beetle families.
Thoracophorus
Thoracophorus is a genus of unmargined rove beetles in the subfamily Osoriinae (Staphylinidae). The genus comprises more than 20 described species distributed across the Neotropical region and beyond. Members are primarily associated with arboreal habitats, particularly tree canopies and trunks.
Thoracophorus brevicristatus
Thoracophorus brevicristatus is an unmargined rove beetle described by Horn in 1871. The species exhibits a notably broad geographic distribution spanning multiple continents, including North America, Central America, the Caribbean, Africa, and Southern Asia. This wide range suggests either strong dispersal capabilities or cryptic species boundaries requiring further study.
Thoracophorus costalis
furrowed rove beetle
Thoracophorus costalis is a species of unmargined rove beetle in the family Staphylinidae. It occurs widely across North America and in Central America. The species has been used as a case study in collection bias research, highlighting how specimen collection patterns can affect perceived distribution and habitat modeling accuracy. Limited detailed natural history information is available for this species.
Thyreocephalus
Thyreocephalus is a genus of rove beetles (Coleoptera: Staphylinidae: Xantholinini) established by Guérin-Méneville in 1844. The genus exhibits substantial geographic diversity, with 32 recognized species in sub-Saharan Africa and nine species recorded from Mexico—the most species-rich country for this genus in the Americas. Recent taxonomic revisions have clarified species boundaries, transferred multiple species from related genera (Eulissus, Xantholinus), and established the 'puncticeps' species group for five closely related Mexican species. A new genus, Afrus, was erected to accommodate species formerly placed in Thyreocephalus.
Thyreocephalus arizonicus
Thyreocephalus arizonicus is a rove beetle (Staphylinidae: Xantholinini) described by Smetana in 1982 from Arizona, USA. It belongs to the 'puncticeps' species group, a cluster of five closely related Mexican species characterized by shared morphological features. The species was first recorded from Mexico in 2016, with specimens documented from Estado de México, Jalisco, and Morelos. As with other members of its genus, it is a small to medium-sized staphylinid beetle with the characteristic short elytra exposing most of the abdomen.
Tmesiphorus costalis
Tmesiphorus costalis is a species of ant-loving beetle in the family Staphylinidae, described by J.L. LeConte in 1849. It belongs to the subfamily Pselaphinae, a group of small rove beetles known for their myrmecophilous associations. The species has been recorded across eastern and central North America.
Toxidium
Toxidium is a genus of rove beetles in the family Staphylinidae, subfamily Scaphidiinae. The genus was established by John Lawrence LeConte in 1860. Recent taxonomic work has expanded the genus with multiple new species described in 2025, primarily from Brazil. Members of this genus belong to the tribe Scaphisomatini, a group of small beetles often associated with fungal habitats.
Trichiusa
Trichiusa is a genus of small rove beetles (Staphylinidae: Aleocharinae) comprising approximately 15 described species distributed across North America and Europe. The genus was revised taxonomically in 2015, with several species synonymized under Trichiusa pilosa. Canadian records document presence across multiple provinces and territories from Nova Scotia to Yukon Territory.
Trichiusa hirsuta
Trichiusa hirsuta is a species of rove beetle in the family Staphylinidae, subfamily Aleocharinae, described by Casey in 1906. The genus Trichiusa belongs to the tribe Athetini, a diverse group of small to minute rove beetles. Like other aleocharines, this species likely inhabits leaf litter, soil, or decaying organic matter in forested environments. The specific epithet 'hirsuta' refers to a hairy or bristly appearance, a characteristic feature of this species.
Trichonychina
Trichonychina is a subtribe of minute rove beetles within the subfamily Pselaphinae, family Staphylinidae. Members of this subtribe are characterized by their small body size and are part of the diverse Euplectitae supertribe. The subtribe was established by Reitter in 1882 and contains multiple genera of these cryptic beetles. Pselaphinae beetles are generally associated with leaf litter and soil habitats, though specific ecological data for Trichonychina as a whole is limited.
Trichonyx sulcicollis
Trichonyx sulcicollis is a small rove beetle (family Staphylinidae, subfamily Pselaphinae) originally described from Europe in 1816. It belongs to the tribe Trichonychini within the diverse ant-loving beetle group (Pselaphinae). The species has been recorded across much of Europe and has been introduced to the northeastern United States (New Hampshire, New York). As a pselaphine rove beetle, it is likely associated with leaf litter and soil habitats, though specific ecological details remain poorly documented.
Trichophya
Trichophya is a genus of rove beetles (Staphylinidae) established by Mannerheim in 1830. It constitutes the sole genus of the monotypic subfamily Trichophyinae. The genus contains at least two described species, Trichophya andrewesi and Trichophya antennalis, with records from Europe and North America.
Trichophya tarsalis
Trichophya tarsalis is a rove beetle in the family Staphylinidae, subfamily Trichophyinae. The species was originally described as Eumitocerus tarsalis by Casey in 1886. It is recorded from California and Oregon in the western United States. As a member of Staphylinidae, it shares the family's characteristic shortened elytra that expose most of the abdomen. Very few observations of this species exist in public databases.
Trichophyinae
Trichophyinae is a monotypic subfamily of rove beetles (Staphylinidae) containing only the genus Trichophya. Established by Thomson in 1858, this subfamily represents one of the most species-poor lineages within the hyperdiverse rove beetle family. The genus Trichophya contains multiple described species, though the exact number remains uncertain due to taxonomic revisions. These beetles are rarely encountered and poorly represented in collections.
Trichopsenius
Trichopsenius is a genus of termitophilous rove beetles (Staphylinidae: Aleocharinae) first described by Horn in 1877. All known species are obligate symbionts of termites in the genus Reticulitermes (Rhinotermitidae). The genus was recently recorded from China for the first time with the description of Trichopsenius huaxiensis from Guizhou Province. These beetles exhibit specialized behavioral adaptations for integration into termite colonies.
Trichopsenius depressus
Trichopsenius depressus is a species of rove beetle (family Staphylinidae) in the tribe Trichopseniini, first described by John Lawrence LeConte in 1863. The species epithet "depressus" refers to its flattened body form. It belongs to a group of beetles known to be associated with termites, though specific biological details for this species remain poorly documented in published literature. The species is recorded from the southeastern United States.
Trigonodemus fasciatus
Trigonodemus fasciatus is a species of rove beetle in the family Staphylinidae, subfamily Omaliinae. It was described by Leech in 1939. The species is known from limited distributional records in western North America, specifically British Columbia, Canada and Oregon, USA. As a member of the Omaliinae, it likely inhabits moist, decaying organic matter environments typical of this subfamily, though specific ecological details remain poorly documented.
Trigonurus crotchii
Trigonurus crotchii is a species of rove beetle in the family Staphylinidae, subfamily Trigonurinae. It is one of the few described species in the genus Trigonurus, a group characterized by distinctive morphological features that set them apart from other staphylinid lineages. The species was described by J. L. LeConte in 1874 and is known from western North America.
Trigonurus edwardsi
Trigonurus edwardsi is a species of rove beetle in the family Staphylinidae, described by Sharp in 1875. It belongs to the subfamily Trigonurinae, a small and distinctive group within the Staphylinidae. The species is known from western North America, with records from California and possibly Oregon. Like other members of its genus, it is associated with decaying wood and fungal habitats.
Trimiina
Trimiina is a subtribe of rove beetles (Staphylinidae: Pselaphinae) established by Brendel & Wickham in 1890. Members of this subtribe belong to the tribe Trichonychini within the diverse subfamily Pselaphinae, a group characterized by small body size and often complex morphology associated with life in leaf litter and soil habitats. The subtribe is rarely referenced in general literature and is primarily documented in taxonomic catalogs.
Trimioplectus obsoletus
Trimioplectus obsoletus is a species of ant-loving beetle in the family Staphylinidae, first described by Emil Brendel in 1890. It belongs to the subfamily Pselaphinae, a diverse group of small rove beetles commonly associated with ants and termites. The species occurs in North America, with records from Canada and the eastern and midwestern United States.
Trimium
ant-loving beetles
Trimium is a genus of myrmecophilous rove beetles in the subfamily Pselaphinae, containing over 20 described species. These small beetles are specialized associates of ant colonies, living as inquilines within ant nests. The genus is placed in the tribe Trichonychini and is distributed across parts of northern Europe.
Trogastrina
Trogastrina is a subtribe of minute rove beetles within the family Staphylinidae, subfamily Pselaphinae. These beetles belong to the tribe Trogastrini and are characterized by their small body size and association with leaf litter and soil habitats. The subtribe was established by Brendel and Wickham in 1890. Members of this group are part of the diverse Euplectitae clade, one of the most species-rich lineages within Pselaphinae.
Trogastrini
Trogastrini is a tribe of rove beetles within the subfamily Pselaphinae, first described by Brendel and Wickham in 1890. These beetles are part of the hyperdiverse family Staphylinidae, one of the largest families of organisms. Members of this tribe are characterized by their small body size and specialized morphological adaptations common to Pselaphinae. The tribe is relatively poorly documented in public sources compared to other Pselaphine groups.
Tychobythinus
Tychobythinus is a genus of small rove beetles in the subfamily Pselaphinae (Staphylinidae). The genus is widely distributed across the Palearctic region, including North Africa, southern and Central Europe, the Caucasus, Japan, far eastern Russia, and southeastern China. Several species exhibit troglobitic adaptations, including reduced pigmentation, microphthalmia, winglessness, and elongated appendages. The genus contains at least 44 species and subspecies in Italy alone, with ongoing taxonomic revisions clarifying species boundaries and synonymies.
Tychus
Tychus is a genus of rove beetles (Staphylinidae: Pselaphinae) established by Leach in 1817. Species occur in Europe, North America, and North Africa. The genus belongs to the tribe Tychini within the diverse Pselaphinae subfamily, which are characterized by small body size and often specialized ecological associations. Taxonomic studies have focused on species group delineation, particularly the T. algericus group in North Africa.
Tympanophorus puncticollis
Tympanophorus puncticollis is a species of rove beetle in the family Staphylinidae, originally described by Erichson in 1840 under the basionym Euryporus puncticollis. It belongs to the subfamily Staphylininae and tribe Staphylinini. The species has a broad distribution across North America, with records from Canada and the United States extending into Mexico.
Tyrina
Tyrina is a subtribe of rove beetles (family Staphylinidae) within the subfamily Pselaphinae. It was established by Reitter in 1882 and contains approximately 35 described genera distributed primarily across tropical and subtropical regions, with notable diversity in Asia, Australia, and the Pacific. Members of this subtribe are small, often myrmecophilous beetles that inhabit leaf litter and soil microhabitats. The subtribe is part of the tribe Tyrini, one of the major lineages of the hyperdiverse ant-loving beetle subfamily Pselaphinae.
Tyrini
Tyrini is a tribe of rove beetles within the subfamily Pselaphinae, established by Reitter in 1882. The tribe comprises four subtribes: Centrophthalmina, Janusculina, Somatipionina, and Tyrina. Members of this tribe are small, compact beetles adapted to cryptic habitats such as leaf litter and soil.
Tyrus
Tyrus is a genus of ant-loving beetles in the family Staphylinidae, first described by Aubé in 1833. These small rove beetles are myrmecophiles, living in association with ant colonies. The genus is primarily recorded from northern Europe, with documented occurrences in Denmark, Norway, and Sweden.
Tyrus semiruber
ant-loving beetle
Tyrus semiruber is a small rove beetle in the subfamily Pselaphinae, commonly known as ant-loving beetles. The species was described by Thomas Lincoln Casey in 1897. It is distributed across eastern and central North America, with records from Canada and the United States.
Unamis
Unamis is a genus of rove beetles in the family Staphylinidae, subfamily Omaliinae, containing approximately seven described species. The genus is native to western North America, with species distributed across British Columbia, California, Idaho, Oregon, and Washington. It was established by Casey in 1893.
Upoluna
Upoluna is a genus of minute rove beetles in the subfamily Pselaphinae, family Staphylinidae. Members of this genus are placed in the tribe Tyrini and subtribe Somatipionina. The genus was established by Schaufuss in 1886. Like other pselaphines, species in this genus are small, compact beetles associated with leaf litter and soil habitats.
Vacusus
Vacusus is a genus of rove beetles (family Staphylinidae) within the subfamily Pseudopsinae. The genus contains multiple described species distributed across various regions. Members of this genus are small, elongate beetles characteristic of the Pseudopsinae, a relatively small subfamily of Staphylinidae. Information regarding specific biology and ecology of Vacusus species remains limited in published literature.
Valda
Valda is a genus of ant-loving beetles in the family Staphylinidae, subfamily Pselaphinae. These beetles are myrmecophilous, meaning they live in association with ants. The genus was established by Casey in 1893 and belongs to the tribe Valdini, which is named after it. Members are small, typically cryptic beetles found in leaf litter and soil habitats.
Vatesini
Vatesini is a tribe of rove beetles (Staphylinidae) established by Seevers in 1958, classified within the subfamily Tachyporinae. The tribe comprises ten extant and extinct genera, including Cilea, Coproporus, Vatesus, and the fossil genus †Procileoporus. Members are small to medium-sized beetles with the characteristic abbreviated elytra of Staphylinidae. The tribe has accumulated over 1,600 observations on iNaturalist, indicating moderate documentation of its species in the field.
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.
Vicelva vandykei
Vicelva vandykei is a small rove beetle (Staphylinidae) described by Hatch in 1957. The species is known from limited specimens and observations across a broad circumpolar distribution spanning northwestern North America and the Russian Far East. Records indicate presence in British Columbia, Yukon, Alaska, Washington, Oregon, and the Magadan area of Russia. As a member of the subfamily Phloeocharinae, it is associated with forest floor habitats and decaying organic matter.
Xantholininae
Xantholininae is a subfamily of rove beetles (Staphylinidae) comprising approximately 28 genera and over 100 species in North America alone, with additional diversity in the Palearctic and other regions. The group has been subject to extensive taxonomic revision due to historical confusion in genus-level classification, with multiple synonymizations required to stabilize nomenclature. Members are characterized by specific morphological features that distinguish them from other staphylinid subfamilies, though detailed biological studies remain limited compared to taxonomic treatments.