Leiodidae
Guides
Leiodes assimilis
round fungus beetle
Leiodes assimilis is a species of round fungus beetle in the family Leiodidae. It is a small beetle associated with fungal substrates, typical of its genus. The species has been documented across northern North America, with records spanning Canada and the northern United States.
Leiodes horni
Leiodes horni is a species of round fungus beetle in the family Leiodidae. It is found in western North America, specifically in California and Oregon. The species was described by Hatch in 1929. Like other members of the genus Leiodes, it is associated with fungal habitats.
Leiodes neglecta
Leiodes neglecta is a species of round fungus beetle in the family Leiodidae, described by Baranowski in 1993. It is distributed across northern North America, with records from Canada and the northern United States. As a member of the genus Leiodes, it likely participates in the typical ecological role of round fungus beetles, which are associated with fungal fruiting bodies. The species remains poorly documented in the scientific literature beyond basic taxonomic and distributional records.
Leiodes puncticollis
Leiodes puncticollis is a small round fungus beetle in the family Leiodidae. The species was originally described by Thomson in 1862 under the basionym Anisotoma puncticollis. It has a broad Holarctic distribution spanning Europe, northern Asia, and North America. As a member of the Leiodidae, it is associated with fungal habitats, though specific ecological details remain limited in published literature.
Leiodini
round fungus beetles
Leiodini is a tribe of small beetles within the family Leiodidae, commonly known as round fungus beetles. The tribe contains over 400 described species distributed across 19 genera. Members of this tribe are primarily associated with fungal habitats, particularly decomposing fungi and related organic matter. The group was established by Fleming in 1821 and represents a significant component of the beetle fauna in forest ecosystems.
Leptinillus
mammal-nest beetles
Leptinillus is a genus of small beetles in the family Leiodidae, commonly known as mammal-nest beetles. The genus contains at least two described species, both specialized inhabitants of rodent nests. These beetles are part of the subfamily Platypsyllinae, which includes other nest-dwelling beetles associated with mammals.
Leptinillus validus
Beaver Nest Beetle
Leptinillus validus, commonly known as the beaver nest beetle, is a species of round fungus beetle in the family Leiodidae. It is found in North America, with records from Canada and the northern United States. The common name reflects an ecological association with beaver nests, though specific details of this relationship remain poorly documented. This species belongs to a small genus of beetles with specialized ecological requirements.
Leptinus
mammal nest beetles, mouse nest beetles
Leptinus is a genus of small beetles commonly known as mammal nest beetles or mouse nest beetles. These beetles are facultative ectoparasites of small mammals, with species distributed across North America and Europe. The genus contains at least nine species globally, with three described species in North America.
Lionothus
Lionothus is a genus of small beetles in the family Leiodidae, established by W.J. Brown in 1937. Members belong to the tribe Leiodini within the subfamily Leiodinae. The genus is poorly documented in public sources, with minimal observational records available.
Lionothus ulkei
A small carrion beetle in the family Leiodidae, described by W.J. Brown in 1937. The species is known from scattered records across the eastern and south-central United States. Like other members of its family, it is associated with decomposing organic matter.
Macrohydnobius
Macrohydnobius is a genus of round fungus beetles in the family Leiodidae, established by Peck & Cook in 2009. The genus contains six described species distributed in North America. Members of this genus are small beetles associated with fungal habitats.
Nemadus hornii
Nemadus hornii is a small carrion beetle in the family Leiodidae. It is known from North America, with records across Canada and the eastern and central United States. As a member of the carrion beetle guild, it likely contributes to decomposition processes, though specific ecological details remain poorly documented.
Nemadus triangulum
Nemadus triangulum is a small beetle species in the family Leiodidae, commonly known as round fungus beetles. It was described by Jeannel in 1936 and occurs in eastern North America. The species belongs to the subfamily Cholevinae, a group associated with subterranean and cave habitats. Very little is known about its specific biology or ecology.
Pinodytes
Pinodytes is a genus of small, eyeless beetles in the family Leiodidae, containing at least 40 described species. These beetles are exclusively subterranean, inhabiting soil habitats where they feed on fungal material. The genus was established by Horn in 1880 and belongs to the tribe Catopocerini within the subfamily Catopocerinae. Their eyeless condition reflects complete adaptation to life in darkness.
Pinodytes newelli
Pinodytes newelli is a small, eyeless beetle in the family Leiodidae. It inhabits soil environments and has been observed in Oregon and Washington. The species belongs to a genus specialized for subterranean life, with reduced visual structures.
Platycholeus
Platycholeus is a genus of small carrion beetles in the family Leiodidae, established by Horn in 1880. The genus contains at least two described species: Platycholeus leptinoides (Crotch, 1874) and Platycholeus opacellus (Fall, 1909). Members of this genus are classified within the tribe Leptodirini, subtribe Platycholeina, a group associated with subterranean and carrion-associated habitats.
Platyhydnobius arizonensis
Platyhydnobius arizonensis is a small beetle species in the family Leiodidae. It measures 2.7–3.5 mm in length. The species has a broad distribution across forested northern North America, ranging from Alaska to Newfoundland, with a disjunct population in Arizona.
Prionochaeta
small carrion beetles
Prionochaeta is a monotypic genus of small carrion beetles in the family Leiodidae. The sole described species, P. opaca, is found in North America and feeds on decaying animal matter. These beetles are part of the subfamily Cholevinae and contribute to decomposition and nutrient cycling in carrion habitats.
Prionochaeta opaca
Small Carrion Beetle
Prionochaeta opaca is a small carrion beetle in the family Leiodidae. It is one of two species in the genus Prionochaeta and is widely distributed across North America. The species is associated with carrion and decaying organic matter, though detailed biological studies remain limited.
Pseudoliodini
Pseudoliodini is a tribe of small carrion beetles in the family Leiodidae, established by Portevin in 1926. Members of this tribe are classified within the subfamily Leiodinae and are part of the diverse rove beetle superfamily Staphylinoidea. The tribe contains multiple genera of beetles generally associated with decomposing organic matter.
Ptomaphagus
Ptomaphagus is a genus of small carrion beetles in the family Leiodidae, containing at least 50 described species. Many species are obligately cavernicolous (troglobitic), restricted to cave systems in North America and Eurasia. The genus has been extensively studied as a model system for understanding cave adaptation, speciation, and evolutionary biology. Some species show advanced reproductive isolation, with hybridization experiments demonstrating reduced fecundity and viability between distinct populations.
Ptomaphagus brevior
Ptomaphagus brevior is a small carrion beetle in the family Leiodidae, described by Jeannel in 1949. It belongs to a genus of beetles associated with decaying organic matter. The species has been documented across eastern and central North America, with records extending from Ontario and Quebec in Canada south to Texas.
Ptomaphagus californicus
Ptomaphagus californicus is a species of small carrion beetle in the family Leiodidae, described by J.L. LeConte in 1853. The species is known from California and broader North America. As a member of the carrion beetle family, it is associated with decomposing organic matter, though specific ecological details for this species remain limited in published sources.
Ptomaphagus cavernicola
small carrion beetle
Ptomaphagus cavernicola is a small carrion beetle in the family Leiodidae, first described by Schwarz in 1898. The species is found in Central America and North America, with distribution records from the United States (Alabama, Arkansas, Florida, Georgia, Iowa, Indiana, Missouri, South Carolina, Texas) and Mexico. It belongs to the subgenus Adelops within Ptomaphagus.
Ptomaphagus fumosus
Ptomaphagus fumosus is a small carrion beetle in the family Leiodidae, described by Peck in 1979. It is one of many North American species in the genus Ptomaphagus, a group associated with decomposing organic matter. The species has been documented in the southeastern United States.
Ptomaphagus merritti
Ptomaphagus merritti is a small carrion beetle described by Tishechkin in 2007. The species belongs to the family Leiodidae, a group commonly associated with decomposing organic matter. It is known from a restricted distribution in the southeastern United States.
Ptomaphagus ulkei
Ptomaphagus ulkei is a small carrion beetle in the family Leiodidae, described by Horn in 1885. It is distributed across eastern North America, with records from Alabama, Georgia, Indiana, Kentucky, Maryland, North Carolina, New York, Virginia, and Washington D.C. As a member of the subfamily Cholevinae, it is associated with carrion and decomposing organic matter.
Sciodrepoides
Sciodrepoides is a genus of small carrion beetles in the family Leiodidae, subfamily Cholevinae, containing approximately five described species. The genus includes notable necrophagous species such as Sciodrepoides watsoni, which has been extensively studied for forensic entomology applications. Members are small-bodied, brown beetles with Holarctic distribution patterns.
Sciodrepoides terminans
Sciodrepoides terminans is a small carrion beetle in the family Leiodidae, first described by J.L. LeConte in 1850. The species occurs across much of North America, with documented records from Canada and the United States. As a member of the subfamily Cholevinae, it belongs to a group commonly associated with decomposing organic matter.
Sogdini
Sogdini round fungus beetles
Sogdini is a tribe of small round fungus beetles within the family Leiodidae, comprising approximately 7 genera and at least 20 described species. The tribe was established by Lopatin in 1961. Members are distributed across North and Central America, with species inhabiting northern and mountain forests or sandy habitats. The tribe includes the genera Hydnobius, Kalohydnobius, Macrohydnobius, Platyhydnobius, Sogda, Stereus, and Triarthron.
Triarthron
Triarthron is a genus of round fungus beetles in the family Leiodidae, established by Märkel in 1840. The genus contains at least two described species: Triarthron maerkelii (the type species) and Triarthron lecontei. These beetles belong to the tribe Sogdini within the subfamily Leiodinae. As members of the Leiodidae, they are likely associated with fungal habitats, though specific ecological details remain poorly documented.
Triarthron lecontei
Triarthron lecontei is a species of round fungus beetle in the family Leiodidae. It was described by Horn in 1868. The species is known from North America with records from Canada and the United States. As a member of Leiodidae, it is associated with fungal habitats.
Zeadolopus
Zeadolopus is a genus of small carrion beetles in the family Leiodidae, endemic to New Zealand. The genus was established by Thomas Broun in 1903 and comprises several species of round fungus beetles. Members of this genus are part of the tribe Leiodini within the subfamily Leiodinae. The genus is poorly studied, with limited published information on species-level diversity and natural history.