Predaceous-diving-beetle
Guides
Acilius confusus
Acilius confusus is a species of predaceous diving beetle in the family Dytiscidae, described by Bergsten in 2006. It is found in North America. As a member of the genus Acilius, it is an aquatic predator. The species was separated from related taxa based on morphological and molecular evidence.
Acilius semisulcatus
Woods Predaceous Diving Beetle
Acilius semisulcatus is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America, with records from Canada (Alberta, British Columbia) and the United States. The species is known by the common name Woods Predaceous Diving Beetle.
Agabetes acuductus
Agabetes acuductus is a small predaceous diving beetle in the family Dytiscidae. It inhabits shaded, vegetated wetlands in North America. The species is associated with wooded pools and cattail ponds, often found in leaf litter. It is one of few species in the genus Agabetes.
Agabus anthracinus
Agabus anthracinus is a species of predaceous diving beetle in the family Dytiscidae. It is widespread across northern North America, ranging from the northern United States through Canada to Alaska. Records also indicate presence in Europe and Northern Asia. The species is accepted and documented in major taxonomic databases, though detailed biological studies remain limited.
Agabus arcticus
Agabus arcticus is a predaceous diving beetle in the family Dytiscidae with a Holarctic distribution, occurring in North America and the Palearctic region. It belongs to the arcticus-group of Agabus species, which is characterized by specific morphological and ecological traits adapted to northern environments. The species has three described larval stages and is known from reared material collected in northern Sweden.
Agabus bicolor
Agabus bicolor is a species of predaceous diving beetle in the family Dytiscidae. It was originally described by Kirby in 1837 under the basionym Colymbetes bicolor. The species is found in North America, with records from Alberta and British Columbia in Canada. As a member of Dytiscidae, it is an aquatic predator.
Agabus canadensis
Agabus canadensis is a predaceous diving beetle in the family Dytiscidae, described by Fall in 1922. It is found in North America, with records from Canada (Alberta, British Columbia) and the United States. As a member of the genus Agabus, it is an aquatic predator inhabiting freshwater environments.
Agabus confinis
predaceous diving beetle
Agabus confinis is a predaceous diving beetle in the family Dytiscidae, belonging to the confinis-group within the subgenus Acatodes. The species has a Holarctic distribution, occurring in North America and the Palearctic region. Larval stages have been described from reared material in northern Sweden, with morphological characters enabling separation from other European Agabus species. It is one of approximately 36 species in the confinis-group, which has been subject to taxonomic revision in North America.
Agabus discolor
Agabus discolor is a predaceous diving beetle in the family Dytiscidae, first described by Harris in 1828. The species has a broad geographic distribution spanning North America and the Palearctic region. As a member of the predaceous diving beetles, it is an aquatic predator inhabiting freshwater environments. The species was originally described under the genus Colymbetes before being transferred to Agabus.
Agabus elongatus
Agabus elongatus is a predaceous diving beetle in the family Dytiscidae. It belongs to the elongatus-group, one of three species groups within the confinis-group complex of North American Agabus. The species has a Holarctic distribution, occurring in both North America and the Palearctic region. It is one of two species in the elongatus-group, alongside A. inexspectatus.
Agabus griseipennis
Agabus griseipennis is a predaceous diving beetle described by LeConte in 1859. It belongs to the genus Agabus, a large group of aquatic beetles in the family Dytiscidae. The species is recorded from North America, with specific distribution records from western Canada including Alberta and British Columbia.
Agabus leptapsis
Agabus leptapsis is a predaceous diving beetle in the family Dytiscidae, first described by LeConte in 1878. Originally described as Gaurodytes leptapsis, it is now placed in the genus Agabus. The species is known from western North America, with confirmed records from Alberta and British Columbia, Canada.
Agabus obliteratus
Agabus obliteratus is a predaceous diving beetle in the family Dytiscidae, described by LeConte in 1859. The species occurs in North America. A subspecies, A. obliteratus nectris Leech, 1942, has been recognized. Like other members of the genus, it is aquatic and likely occupies freshwater habitats, though specific ecological details remain poorly documented in published sources.
Agabus pisobius
Agabus pisobius is a predaceous diving beetle in the family Dytiscidae. The species was described by Leech in 1949. It is known from North America, with records from western Canada including Alberta and British Columbia. As a member of the genus Agabus, it is adapted to aquatic environments.
Agabus punctatus
Agabus punctatus is a predaceous diving beetle in the family Dytiscidae, first described by F.E. Melsheimer in 1844. The species is known from North America, though specific details regarding its ecology, habitat preferences, and life history remain poorly documented in the available literature. As a member of the genus Agabus, it is presumed to be aquatic in the adult stage, though this has not been explicitly confirmed for this particular species.
Agabus semipunctatus
Agabus semipunctatus is a predaceous diving beetle in the family Dytiscidae. The species was originally described as Colymbetes semipunctatus by Kirby in 1837 before being transferred to the genus Agabus. It is recorded from North America, with specific distribution records from Alberta and British Columbia in Canada. As a member of the predaceous diving beetles, it is adapted to aquatic habitats.
Agabus smithi
Agabus smithi is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America, with records from Alberta and British Columbia in Canada. As a member of the genus Agabus, it is an aquatic predator, though specific ecological details for this species remain limited in available literature.
Agabus strigulosus
Agabus strigulosus is a species of predaceous diving beetle in the family Dytiscidae. It was first described by Crotch in 1873 under the basionym Gaurodytes strigulosus. The species is found in North America, with records from Alberta and British Columbia in Canada.
Agabus tristis
Agabus tristis is a predaceous diving beetle in the family Dytiscidae. It belongs to the tristis species group, which has a Holarctic distribution. The species occurs in North America and the Palearctic region. It is one of two North American members of the tristis group, alongside A. leptapsis.
Agabus triton
Agabus triton is a species of predaceous diving beetle in the family Dytiscidae, described by Fall in 1922. The species is currently treated as a synonym of Agabus amnicola. It has been recorded from Europe, Northern Asia (excluding China), and North America. As a member of the Dytiscidae, it belongs to a family of aquatic beetles adapted to life in freshwater habitats.
Celina angustata
Celina angustata is a species of predaceous diving beetle in the family Dytiscidae. The species was described by Aubé in 1838. It occurs across North and South America.
Celina grossula
Celina grossula is a species of predaceous diving beetle (family Dytiscidae) described by John Lawrence LeConte in 1863. It belongs to the subfamily Hydroporinae and tribe Methlini. The genus Celina comprises small to minute diving beetles that inhabit aquatic environments. Information regarding the specific biology and ecology of C. grossula remains limited in the available literature.
Celina hubbelli
Hubbell's Predaceous Diving Beetle
Celina hubbelli is a species of predaceous diving beetle in the family Dytiscidae, described by Young in 1979. It is found in North America, with confirmed records from Ontario and Québec in Canada. The species is named in honor of the entomologist. As a member of the genus Celina, it belongs to the tribe Methlini within the subfamily Hydroporinae.
Celina imitatrix
Celina imitatrix is a predaceous diving beetle in the family Dytiscidae, described by Young in 1979. The species is known from North America and the Neotropics. Like other members of the genus Celina, it is aquatic and predatory. Very few specific observations or studies have been published for this particular species.
Celina occidentalis
Celina occidentalis is a predaceous diving beetle described by Young in 1979. It belongs to the family Dytiscidae, a group of aquatic beetles adapted for underwater predation. The species is known from North America and the Neotropics, though specific details about its biology remain limited in published literature.
Celina slossoni
Celina slossoni is a species of predaceous diving beetle (family Dytiscidae) found in North America. As a member of the subfamily Hydroporinae and tribe Methlini, it belongs to one of the most diverse lineages of diving beetles. Very little specific information is documented about this species beyond its taxonomic description.
Colymbetes densus
Colymbetes densus is a predaceous diving beetle (family Dytiscidae) found in North America. The species was described by LeConte in 1859 and includes two recognized subspecies: C. d. densus and C. d. inaequalis. As a member of the genus Colymbetes, it belongs to a group of medium to large diving beetles adapted to aquatic habitats.
Colymbetes dolabratus
Colymbetes dolabratus is a predaceous diving beetle in the family Dytiscidae. It has a Holarctic distribution, occurring in both North America and the Palearctic region. The species belongs to the genus Colymbetes, a group of medium-sized diving beetles adapted to aquatic habitats.
Colymbetes exaratus
Colymbetes exaratus is a predaceous diving beetle (family Dytiscidae) described by LeConte in 1862. The species occurs in North America, with records from Canada (Alberta, British Columbia) and the United States. Like other members of the genus Colymbetes, it is an aquatic predator inhabiting freshwater systems. Two subspecies are recognized: C. e. exaratus and C. e. incognitus.
Coptotomus
Coptotomus is a genus of predaceous diving beetles comprising approximately six extant species and one extinct species. It represents the sole genus of the subfamily Coptotominae within Dytiscidae. The genus has a disjunct distribution spanning North America and the Neotropics, with the extinct species known from Baltic amber in the Palearctic. Species were described between 1801 and 2020.
Coptotomus venustus
Coptotomus venustus is a species of predaceous diving beetle in the family Dytiscidae. It was described by Thomas Say in 1823. The species is distributed across North America and the Neotropics. As a member of the subfamily Coptotominae, it represents one of the more distinctive lineages within the predaceous diving beetles.
Crinodessus
Crinodessus is a monotypic genus of predaceous diving beetles in the family Dytiscidae. The genus contains a single species, Crinodessus amyae, described by K.B. Miller in 1997. This genus belongs to the tribe Bidessini within the subfamily Hydroporinae.
Cybistrinae
Cybistrinae is a subfamily of predaceous diving beetles within Dytiscidae, comprising 12 genera and approximately 130 described extant species. Members are large-bodied aquatic beetles distributed across multiple continents, with notable diversity in the Neotropical region and Japan. The subfamily is characterized by distinctive larval and adult morphological features, including specialized tarsal structures and genitalia. Several species are of conservation concern, including critically endangered populations in Japan.
Derovatellus floridanus
Derovatellus floridanus is a predaceous diving beetle in the family Dytiscidae, first described by Fall in 1932. It belongs to the tribe Vatellini, a group of small to medium-sized diving beetles. The species is known from North America, with distribution records extending to the Caribbean, Middle America, and South America. As a member of the subfamily Hydroporinae, it is adapted to aquatic habitats.
Desmopachria convexa
Desmopachria convexa is a species of predaceous diving beetle in the family Dytiscidae, first described by Aubé in 1838. It belongs to the subfamily Hydroporinae and tribe Hyphydrini. The species has a broad distribution spanning North and South America. Like other members of the genus Desmopachria, it is adapted to aquatic habitats and exhibits the compact, convex body form characteristic of this group of small diving beetles.
Desmopachria dispersa
Desmopachria dispersa is a small predaceous diving beetle in the family Dytiscidae, first described by Crotch in 1873. The species is distributed across North America and the Neotropics. As a member of the genus Desmopachria, it belongs to a group of minute dytiscids often referred to as 'pygmy diving beetles' due to their diminutive size. The specific epithet 'dispersa' suggests a connection to dispersal, though the original etymology has not been confirmed in available sources.
Deuteronectes picturatus
Deuteronectes picturatus is a species of diving beetle in the family Dytiscidae, first described by Horn in 1883. It belongs to the subfamily Hydroporinae, a diverse group of small to medium-sized predaceous diving beetles. The species is native to North America. Like other members of Dytiscidae, it is an aquatic beetle adapted to life in freshwater environments.
Dytiscus cordieri
Dytiscus cordieri is a predaceous diving beetle in the family Dytiscidae, first described by Aubé in 1838. It inhabits freshwater aquatic environments across North America, with confirmed records from western Canada including Alberta and British Columbia. As a member of the genus Dytiscus, it shares the characteristic adaptations of large diving beetles for underwater predation.
Dytiscus habilis
Dytiscus habilis is a predaceous diving beetle in the family Dytiscidae. It is the only species in the genus Dytiscus known to occur in the Neotropics, with its range extending from the southwestern United States through Mexico to Guatemala. The species was described by Thomas Say in 1830.
Dytiscus hybridus
Hybrid Predaceous Diving Beetle
Dytiscus hybridus is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America, with confirmed records from Alberta and Manitoba in Canada. As a member of the genus Dytiscus, it is an aquatic predator, though specific details of its biology remain poorly documented in published sources.
Dytiscus verticalis
Vertical Diving Beetle
Dytiscus verticalis is a species of predaceous diving beetle in the family Dytiscidae. As a member of the genus Dytiscus, it is among the largest diving beetles in North America. The species inhabits freshwater aquatic systems and, like other members of its genus, is an active predator in both larval and adult stages. The specific epithet 'verticalis' refers to a characteristic morphological feature of this species.
Eretes
Eretes is a genus of predaceous diving beetles (family Dytiscidae) comprising four recognized species. The genus exhibits considerable morphological variation in size and coloration among and within species, necessitating reliance on male genitalia morphology for species delimitation. Species are distributed across the Afrotropical, Palearctic, and Asian regions.
Heterosternuta diversicornis
Heterosternuta diversicornis is a species of predaceous diving beetle in the family Dytiscidae, first described by Sharp in 1882. It belongs to the subfamily Hydroporinae, a diverse group of small to medium-sized diving beetles. The species is known from North America and has been documented through 79 iNaturalist observations as of the source date.
Heterosternuta wickhami
Hydroporus diving beetle
Heterosternuta wickhami is a predaceous diving beetle in the family Dytiscidae. The species was originally described as Hydroporus wickhami by Zaitzev in 1908. It has been documented in wadeable streams and is known from North America, with first records for Missouri reported from aquatic macroinvertebrate community samples collected between 2002 and 2018.
Hornectes quadrimaculatus
Hornectes quadrimaculatus is a species of predaceous diving beetle in the family Dytiscidae, subfamily Hydroporinae. Originally described as Hydroporus quadrimaculatus by Horn in 1883, it was later transferred to the genus Hornectes. The species epithet "quadrimaculatus" (four-spotted) refers to its characteristic elytral maculation. It belongs to the tribe Hydroporini within the speciose subfamily Hydroporinae, which contains many small to medium-sized diving beetles.
Hydaticus aruspex
Hydaticus aruspex is a predaceous diving beetle in the family Dytiscidae. It occurs across the Holarctic region, including North America and Eurasia. As a member of Hydaticus, it is adapted to aquatic life and functions as an active predator in freshwater systems.
Hydaticus cinctipennis
Hydaticus cinctipennis is a predaceous diving beetle in the family Dytiscidae. The species has been documented in North America and the Caribbean. As a member of the genus Hydaticus, it belongs to a group of aquatic beetles adapted to freshwater environments.
Hydrocolus deflatus
Hydrocolus deflatus is a species of predaceous diving beetle in the family Dytiscidae, first described by Fall in 1923. It belongs to the genus Hydrocolus, a group of small to medium-sized diving beetles within the subfamily Hydroporinae. The species is documented from North America. Like other members of Dytiscidae, it is adapted to aquatic habitats.
Hydrocolus paugus
Hydrocolus paugus is a predaceous diving beetle in the family Dytiscidae, first described by Fall in 1923. Originally described as Hydroporus paugus, it was later transferred to the genus Hydrocolus. It is a member of the subfamily Hydroporinae, which contains small to medium-sized diving beetles. The species is known from limited collection records in western North America.
Hydrocolus persimilis
Hydrocolus persimilis is a species of predaceous diving beetle in the family Dytiscidae. It is known from North America, with records from Labrador and New Brunswick in Canada. As a member of the Hydroporinae subfamily, it inhabits aquatic environments where it functions as an active predator.