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.
Hydroporus columbianus
Hydroporus columbianus is a species of predaceous diving beetle in the family Dytiscidae, first described by Fall in 1923. It belongs to the subfamily Hydroporinae, a diverse group of small to medium-sized diving beetles. The species is known from western North America, with records from Alberta and British Columbia in Canada. Like other members of the genus, it is an aquatic predator.
Hydroporus despectus
Belittled Water Beetle
Hydroporus despectus is a predaceous diving beetle in the family Dytiscidae, described by Sharp in 1882. It occurs in North America with records from Canada (Alberta, British Columbia) and presumably the United States. As a member of the genus Hydroporus, it inhabits aquatic environments and functions as a predator. The common name "Belittled Water Beetle" has been assigned to this species.
Hydroporus fortis
Hydroporus fortis is a predaceous diving beetle in the family Dytiscidae. The species was described by John Lawrence LeConte in 1852. It occurs in North America, with records extending to British Columbia, Canada. Like other members of its genus, it is an aquatic predator.
Hydroporus longiusculus
Hydroporus longiusculus is a predaceous diving beetle in the family Dytiscidae. It is one of two species comprising the longiusculus-group within the genus Hydroporus. The species has undergone taxonomic revision, with three former species (H. hirtellus, H. perplexus, H. utahensis) synonymized under it. It is found in the Nearctic region.
Hydroporus niger
predaceous diving beetle
Hydroporus niger is a species of predaceous diving beetle in the family Dytiscidae, first described by Thomas Say in 1823. It is found in North America, with records from Canada (New Brunswick, Newfoundland) and the United States. The genus Hydroporus is one of the most species-rich genera of diving beetles, containing numerous small to medium-sized aquatic predators.
Hydroporus striola
Hydroporus striola is a small predaceous diving beetle in the family Dytiscidae. It has been recorded across the Holarctic region, including North America and the Palearctic. As a member of the genus Hydroporus, it is associated with aquatic habitats.
Hydroporus subpubescens
Hydroporus subpubescens is a predaceous diving beetle in the family Dytiscidae, described by LeConte in 1852. The species was transferred from the subpubescens-group to the nigellus-group based on extreme morphological similarity to H. tenebrosus, resulting in the elimination of the subpubescens-group as a formal grouping. It is known from North America.
Hydroporus tenebrosus
Hydroporus tenebrosus is a predaceous diving beetle in the family Dytiscidae, first described by LeConte in 1850. It belongs to the genus Hydroporus, a diverse group of small to medium-sized diving beetles. The species has been used as a morphological reference in taxonomic revisions due to its extreme similarity to H. subpubescens. As a member of the Dytiscidae, it is presumed to be an aquatic predator, though specific ecological details remain poorly documented in the accessible literature.
Hydrovatus brevipes
Hydrovatus brevipes is a predaceous diving beetle (family Dytiscidae) described by Sharp in 1882. It belongs to the tribe Hydrovatini within the subfamily Hydroporinae. The species is documented from North America, though specific details regarding its ecology, habitat preferences, and life history remain poorly documented in the available literature.
Hydrovatus hornii
Hydrovatus hornii is a species of predaceous diving beetle (family Dytiscidae) described by George Henry Crotch in 1873. It belongs to the subfamily Hydroporinae and tribe Hydrovatini, a group of small to medium-sized diving beetles adapted to aquatic habitats. The species is known from the Caribbean, Middle America, and North America, though specific biological details remain poorly documented in published literature.
Hygrotus sayi
Say's Diving Beetle
Hygrotus sayi is a predaceous diving beetle in the family Dytiscidae. It is found in North America, with confirmed records from Alberta and British Columbia in Canada. The species is commonly known as Say's Diving Beetle.
Ilybiosoma seriatum
Dot-lined Predaceous Diving Beetle
Ilybiosoma seriatum is a predaceous diving beetle in the family Dytiscidae, known by the common name Dot-lined Predaceous Diving Beetle. The species was described by Thomas Say in 1823. It is found in North America, with records from Canada and the United States.
Ilybius hypomelas
Ilybius hypomelas is a predaceous diving beetle in the family Dytiscidae, first described by Mannerheim in 1843. This species is part of a genus of small to medium-sized diving beetles commonly found in freshwater habitats. It is known from North America, with specific records from western Canadian provinces including Alberta and British Columbia. As a member of Dytiscidae, it is adapted for aquatic predation.
Ilybius larsoni
Ilybius larsoni is a species of predaceous diving beetle in the family Dytiscidae, described by Fery & Nilsson in 1993. The species is known from eastern North America, with confirmed records from New Brunswick and Nova Scotia in Canada. As a member of the genus Ilybius, it is adapted to aquatic environments where it preys on other small organisms.
Ilybius oblitus
Ilybius oblitus is a predaceous diving beetle in the family Dytiscidae, first described by Sharp in 1882. It occurs in North America, with confirmed records from Ontario, Canada. The species has been documented to tolerate low temperatures, though it remains susceptible to freezing. Observations of this species are sparse, with limited biological data available.
Ilybius opacus
Ilybius opacus is a predaceous diving beetle in the family Dytiscidae, distributed across North America and the Palearctic region. It is one of numerous species in the genus Ilybius, a group of medium-sized diving beetles typically associated with freshwater habitats. The species was described by Aubé in 1837 and remains a valid, accepted taxon in current classifications.
Ilybius pleuriticus
Ilybius pleuriticus is a predaceous diving beetle in the family Dytiscidae, first described by LeConte in 1850. It is known from western North America, with records from Alberta and British Columbia in Canada. Like other members of the genus Ilybius, it is an aquatic predator inhabiting freshwater environments.
Ilybius vancouverensis
Ilybius vancouverensis is a species of predaceous diving beetle in the family Dytiscidae, first described by Leech in 1937. It was originally placed in the genus Agabus before being transferred to Ilybius. The species is known from the Pacific Northwest of North America, with records from British Columbia, Canada and Alaska, United States. Like other members of the genus, it is an aquatic predator inhabiting freshwater environments.
Laccophilus biguttatus
Laccophilus biguttatus is a small predaceous diving beetle in the family Dytiscidae, first described by William Kirby in 1837. The species has a notably wide distribution spanning both the Nearctic and Palearctic regions, making it one of the more geographically extensive members of its genus. Like other Laccophilus species, it inhabits freshwater aquatic environments where it functions as an active predator.
Laccophilus horni
Laccophilus horni is a species of predaceous diving beetle in the family Dytiscidae. It occurs in North America and the Neotropics. As a member of the genus Laccophilus, it is a small diving beetle adapted to aquatic environments. Specific ecological details for this species remain limited in published sources.
Laccophilus maculosus
dingy diver
Laccophilus maculosus, commonly known as the dingy diver, is a predaceous diving beetle in the family Dytiscidae. The species is distributed across Central America and North America. It belongs to a genus of small to medium-sized diving beetles that inhabit freshwater environments.
Laccophilus maculosus decipiens
Laccophilus maculosus decipiens is a subspecies of predaceous diving beetle in the family Dytiscidae. It belongs to the genus Laccophilus, a diverse group of small to medium-sized diving beetles commonly found in freshwater habitats. The subspecies was described by LeConte in 1852 and occurs in North America and Middle America. Like other members of its genus, it is adapted to aquatic life with modified hind legs for swimming.
Laccophilus maculosus maculosus
A subspecies of predaceous diving beetle in the family Dytiscidae. Like other members of the genus Laccophilus, it is an aquatic beetle adapted to freshwater habitats. The specific epithet 'maculosus' refers to spotted or maculate patterning typical of this taxon.
Laccophilus maculosus shermani
Laccophilus maculosus shermani is a subspecies of predaceous diving beetle in the family Dytiscidae. It belongs to the genus Laccophilus, a group of small diving beetles commonly found in aquatic habitats. The subspecies was described by Leech in 1944. As a member of the subfamily Laccophilinae, it shares characteristics with other Laccophilus species, including adaptations for underwater predation. Specific distinguishing features of this subspecies compared to the nominate form remain poorly documented in available sources.
Laccophilus pictus
Laccophilus pictus is a species of predaceous diving beetle in the family Dytiscidae. It is found in the Neotropics, with distribution records spanning Middle America and North America. The species was described by Laporte in 1835 and includes three recognized subspecies: L. p. pictus (the nominate subspecies), L. p. coccinelloides, and L. p. insignis.
Laccophilus quadrilineatus
Laccophilus quadrilineatus is a species of predaceous diving beetle described by Horn in 1871. It belongs to the family Dytiscidae, a group of aquatic beetles adapted to life in freshwater environments. The species is distributed across North America and the Neotropics. Three subspecies are recognized: L. q. quadrilineatus (the nominate form), L. q. mayae, and L. q. tehuanensis.
Laccophilus salvini
Laccophilus salvini is a species of predaceous diving beetle in the family Dytiscidae, subfamily Laccophilinae. The species was described by Sharp in 1882 and is recorded from Middle America. As a member of Laccophilus, it belongs to a genus of small diving beetles commonly found in aquatic habitats. Specific biological details for this species remain poorly documented.
Laccophilus schwarzi
Laccophilus schwarzi is a predaceous diving beetle in the family Dytiscidae, described by Fall in 1917. It belongs to the genus Laccophilus, a diverse group of small to medium-sized diving beetles found in aquatic habitats. The species is known from North America, though specific details about its ecology and distribution remain limited in available literature.
Laccophilus vacaensis
Laccophilus vacaensis is a predaceous diving beetle in the family Dytiscidae, first described by Young in 1953. The species is distributed across North America and the Neotropics. It is one of three recognized subspecies within the L. vacaensis complex, alongside L. v. chihuahuae and L. v. thermophilus.
Laccornis conoideus
Laccornis conoideus is a species of predaceous diving beetle in the family Dytiscidae. It is known from North America, with records from Alberta and British Columbia in Canada. As a member of the tribe Laccornini, it belongs to a group of small to medium-sized diving beetles. The species was first described by LeConte in 1850.
Laccornis latens
Laccornis latens is a species of predaceous diving beetle in the family Dytiscidae. It was described by Fall in 1937. The species is known from North America, with confirmed records from New Brunswick and Nova Scotia in Canada.
Liodessus affinis
Liodessus affinis is a small predaceous diving beetle in the family Dytiscidae, first described by Say in 1823. The species belongs to a taxonomically challenging species complex that was revised in 1998, during which several former synonyms were elevated to species status. It is found in aquatic habitats across North America, with records from Canada and the United States. Like other members of the genus, it is a predator in freshwater ecosystems.
Liodessus crotchi
Liodessus crotchi is a species of predaceous diving beetle in the family Dytiscidae, first described by Nilsson in 2001. It is known from North America, with distribution records from Labrador and Manitoba in Canada. As a member of the Bidessini tribe within Hydroporinae, it belongs to a diverse group of small diving beetles. Very little species-specific information has been published beyond taxonomic description and basic distribution.
Liodessus noviaffinis
Liodessus noviaffinis is a small predaceous diving beetle described in 1998 from Florida. It belongs to the L. affinis species complex, a group of four closely related North American species that are difficult to distinguish based on external morphology. The species is known from the eastern United States and Canada, with records from New Brunswick and Nova Scotia. Male genitalia provide the only reliable means of identification.
Lioporeus pilatei
Lioporeus pilatei is a species of predaceous diving beetle in the family Dytiscidae. It was originally described as Hydroporus pilatei by Fall in 1917 before being transferred to the genus Lioporeus. The species is known from North America. As a member of Dytiscidae, it is an aquatic predator.
Matus
Matus is a genus of predaceous diving beetles in the family Dytiscidae, subfamily Matinae. First described by Aubé in 1836, this genus belongs to the tribe Matini. Members of this genus are aquatic beetles adapted to life in freshwater environments. The genus contains multiple species distributed across various regions.
Matus bicarinatus
Matus bicarinatus is a predaceous diving beetle in the family Dytiscidae. It belongs to the subfamily Matinae, a group of specialized diving beetles. The species is documented from North America, with records from Ontario, Canada. Knowledge of its biology remains limited due to few observations.
Meridiorhantus calidus
Meridiorhantus calidus is a predaceous diving beetle in the family Dytiscidae. The species was transferred from the genus Rhantus to Meridiorhantus based on phylogenetic studies. It is found in North America and the Neotropics. The species was originally described by Fabricius in 1792 as Dytiscus calidus.
Metaxydytes fraternus
Metaxydytes fraternus is a species of predaceous diving beetle in the family Dytiscidae. It belongs to a small genus of aquatic beetles found in the Neotropical region. Very few observations of this species have been documented, with only six records currently available.
Nartus
Nartus is a genus of predaceous diving beetles (family Dytiscidae) comprising at least two described species: Nartus grapii and Nartus sinuatus. The genus was reinstated by Balke et al. in 2017 to accommodate species formerly placed in Rhantus, based on molecular and morphological evidence distinguishing them from that genus. As members of the subfamily Colymbetinae, these beetles are aquatic predators inhabiting freshwater environments.
Nartus sinuatus
Nartus sinuatus is a predaceous diving beetle in the family Dytiscidae, found in North America. The species was transferred from the genus Rhantus to Nartus based on phylogenetic revisions. It is a small to medium-sized aquatic beetle with distinctive morphological features useful for identification.
Nebrioporus depressus
Nebrioporus depressus is a predaceous diving beetle (Coleoptera: Dytiscidae) first described by Fabricius in 1775. It belongs to the N. depressus-group, the most speciose species-group within the genus Nebrioporus. The species is distributed across the Holarctic region, occurring in Europe, Northern Asia (excluding China), and North America. As a member of Dytiscidae, it is adapted to aquatic habitats where it functions as an active predator.
Nebrioporus macronychus
Nebrioporus macronychus is a predaceous diving beetle in the family Dytiscidae. The species was described by Shirt & Angus in 1992. It belongs to the genus Nebrioporus, a group of small to medium-sized diving beetles primarily associated with running waters. The specific epithet 'macronychus' refers to enlarged claws, a distinctive morphological feature of this species.
Nectoporus crassulus
Nectoporus crassulus is a species of predaceous diving beetle (family Dytiscidae) described by Fall in 1923. It belongs to the subfamily Hydroporinae, a diverse group of small to medium-sized diving beetles. The genus Nectoporus is part of the subtribe Deronectina, which contains species primarily associated with freshwater habitats.
Neoclypeodytes leachi
Neoclypeodytes leachi is a species of predaceous diving beetle in the family Dytiscidae, first described by Leech in 1948. It belongs to the genus Neoclypeodytes, a group of small diving beetles within the tribe Bidessini. The species is known from North America, though specific details about its biology and ecology remain limited in published literature.
Neoclypeodytes plicipennis
Neoclypeodytes plicipennis is a predaceous diving beetle in the family Dytiscidae, first described by Crotch in 1873. It belongs to a western North American and northern Central American genus characterized by a distinctive pattern of two maculae on each elytron. A lectotype was designated for this species during the 2001 revision of the genus.
Neoporus mellitus
Neoporus mellitus is a small predaceous diving beetle (family Dytiscidae) in the subfamily Hydroporinae. Originally described by LeConte in 1855 as Hydroporus mellitus, the species was later transferred to the genus Neoporus. It is recorded from eastern North America, with confirmed observations in New Brunswick and Ontario, Canada. Like other members of the genus, it inhabits freshwater aquatic environments.
Neoporus shermani
Neoporus shermani is a predaceous diving beetle in the family Dytiscidae, described by Fall in 1917. It belongs to the subfamily Hydroporinae, a group of small to medium-sized diving beetles. The species is recorded from North America, though specific habitat and ecological details remain poorly documented.
Neoporus sulcipennis
Neoporus sulcipennis is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
Neoporus superioris
Neoporus superioris is a species of predaceous diving beetle in the family Dytiscidae, first described by J. Balfour-Browne in 1944 under the basionym Hydroporus superioris. The species belongs to the subfamily Hydroporinae, a diverse group of small to medium-sized diving beetles. It is known from North America with confirmed records from Alberta and British Columbia in Canada.
Neoporus undulatus
Neoporus undulatus is a 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 was first described by Thomas Say in 1823. As a member of the Hydroporinae subfamily, it belongs to a diverse group of small to medium-sized diving beetles that inhabit aquatic environments.
Neoscutopterus angustus
Narrow Predaceous Diving Beetle
Neoscutopterus angustus is a predaceous diving beetle in the family Dytiscidae. The species was described by LeConte in 1850. It is known from North America, with records from Alberta and British Columbia in Canada. As a member of Dytiscidae, it is an aquatic predator, though specific ecological details for this species remain limited.
Neoscutopterus hornii
Horn's Predaceous Diving Beetle
Neoscutopterus hornii is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America, with distribution records from Alberta and British Columbia in Canada. The species was described by Crotch in 1873. As a member of the predaceous diving beetles, it is an aquatic predator, though specific ecological details remain poorly documented in the available literature.
Oreodytes humboldtensis
Oreodytes humboldtensis is a species of predaceous diving beetle in the family Dytiscidae, described by Zimmerman in 1985. As a member of the genus Oreodytes, it belongs to a group of small diving beetles primarily associated with running water habitats. The species epithet suggests a connection to the Humboldt region, likely referring to Humboldt County or the broader Humboldt Bay area of coastal northern California. Like other Oreodytes species, it is presumed to be an aquatic predator in freshwater systems.
Oreodytes laevis
Oreodytes laevis is a species of predaceous diving beetle in the family Dytiscidae. It is distributed across North America, with records from Canada (Alberta, British Columbia) and the United States. As a member of the Hydroporinae subfamily, it inhabits aquatic environments where it functions as an active predator.
Rhantus binotatus
Double-marked Swimming Beetle
Rhantus binotatus is a predaceous diving beetle in the family Dytiscidae. The species occurs in North America, with records from Canada (Alberta, British Columbia) and the United States. As a member of the genus Rhantus, it inhabits aquatic environments where it functions as an active predator. The common name 'Double-marked Swimming Beetle' refers to distinctive markings used in identification.
Rhantus gutticollis
Rhantus gutticollis is a predaceous diving beetle in the family Dytiscidae. The species occurs across a broad geographic range spanning North America, Central America, and the Caribbean. Like other members of its genus, it inhabits aquatic environments and functions as an active predator. The specific epithet "gutticollis" refers to spotted or marked neck/throat region characteristics.
Rhantus sericans
Rhantus sericans is a predaceous diving beetle in the family Dytiscidae, first described by Sharp in 1882. The species is distributed across North America and has been recorded from the Holarctic region, including the Canadian province of Alberta. As a member of the genus Rhantus, it belongs to a group of diving beetles adapted to aquatic environments. The species is represented by 88 observations on iNaturalist, indicating it is documented but not exceptionally common in citizen science records.
Rhantus suturellus
Rhantus suturellus is a predaceous diving beetle in the family Dytiscidae. It is distributed across the Holarctic region, occurring in both North America and the Palearctic. The species is part of a genus of aquatic beetles adapted to freshwater environments.
Rhantus wallisi
Rhantus wallisi is a predaceous diving beetle in the family Dytiscidae, described by Hatch in 1953. The species is endemic to North America, with documented occurrences in western Canada including Alberta and British Columbia. Like other members of the genus Rhantus, it is an aquatic predator inhabiting freshwater environments.
Sanfilippodytes brumalis
Sanfilippodytes brumalis is a small predaceous diving beetle in the family Dytiscidae, described by Brown in 1930. The species belongs to the subfamily Hydroporinae, a group of generally small dytiscids. It occurs in northern North America, with records from Labrador and Québec in Canada. As a member of Dytiscidae, it is aquatic and predatory, though specific natural history details remain poorly documented.
Sanfilippodytes compertus
Cool Predaceous Diving Beetle
Sanfilippodytes compertus is a species of predaceous diving beetle in the family Dytiscidae. It is known from western North America, with confirmed records in Alberta and British Columbia, Canada. The species was described by Brown in 1932. Like other members of the genus, it is likely associated with freshwater habitats.
Sanfilippodytes edwardsi
Sanfilippodytes edwardsi is a predaceous diving beetle in the family Dytiscidae, first described by Wallis in 1933. The species is endemic to western North America, with records from Alberta and British Columbia in Canada. As a member of the subfamily Hydroporinae, it inhabits freshwater aquatic environments where it preys on small invertebrates.
Sanfilippodytes pacificus
Sanfilippodytes pacificus is a predaceous diving beetle in the family Dytiscidae. The species was described by Fall in 1923 and is known from western North America, including Alaska and British Columbia. Like other members of Dytiscidae, it is an aquatic predator.
Sanfilippodytes pseudovilis
Sanfilippodytes pseudovilis is a species of predaceous diving beetle in the family Dytiscidae. It was described by Young in 1953. The species is known from North America, with confirmed records from the Canadian provinces of Alberta and British Columbia. As a member of the Hydroporinae subfamily, it belongs to a group of small diving beetles.
Suphis
Suphis is a genus of small aquatic beetles in the family Noteridae, first described by Aubé in 1836. The genus contains approximately eleven described species distributed primarily in the Americas, with records from North, Central, and South America. Members of this genus are associated with freshwater habitats, particularly wetlands and slow-moving waters. As part of the Noteridae family, they represent one of several genera within the diverse group of predaceous diving beetles.
Thermonectus intermedius
Thermonectus intermedius is a predaceous diving beetle in the family Dytiscidae, first described by Crotch in 1873. The species is distributed in North America. As a member of the genus Thermonectus, it is an aquatic predator inhabiting freshwater environments. The genus is known for species that are active swimmers and visual hunters in aquatic habitats.
Uvarus subtilis
Uvarus subtilis is a small predaceous diving beetle in the family Dytiscidae, subfamily Hydroporinae. First described by LeConte in 1852, this species is distributed across North America, with records extending to British Columbia, Canada. As a member of the tribe Bidessini, it inhabits aquatic environments where it preys on small invertebrates.
Uvarus texanus
Uvarus texanus is a predaceous diving beetle in the family Dytiscidae, first described by Sharp in 1882. The species is known from North America and is placed in the tribe Bidessini within the subfamily Hydroporinae. As a member of Dytiscidae, it is an aquatic beetle adapted to life in freshwater environments. Available information on this species is limited, with only seven documented observations in iNaturalist as of the knowledge cutoff.