Aquatic-beetle
Guides
Hexacylloepus ferrugineus
Rusty Riffle Beetle, rusty elmid
Hexacylloepus ferrugineus, commonly known as the rusty riffle beetle or rusty elmid, is a species of riffle beetle in the family Elmidae. It is found in Central America and North America. The species was first described by Horn in 1870. Riffle beetles in this family are typically associated with aquatic habitats, particularly flowing water environments.
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 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.
Hydraena americana
Hydraena americana is a species of minute moss beetle in the family Hydraenidae, described by Manfred Jäch in 1993. It belongs to the subgenus Holcohydraena. The species is known from eastern North America, with records from Canada and the northeastern United States. Like other members of its genus, it is an aquatic beetle inhabiting small freshwater habitats.
Hydraena marginicollis
Hydraena marginicollis is a species of minute aquatic beetle in the family Hydraenidae. It is the namesake of the marginicollis group and marginicollis subgroup within the genus Hydraena. The species was described by Kiesenwetter in 1849. Distribution records indicate presence in the southeastern United States and the Bahamas.
Hydraena pacifica
Hydraena pacifica is a species of minute aquatic beetle in the family Hydraenidae, first described by Perkins in 1980. The species belongs to the genus Hydraena, commonly known as long-palped water beetles, characterized by their enlarged maxillary palps. It is distributed across western North America from Canada through the western United States. The species epithet 'pacifica' refers to its occurrence in the Pacific region of North America.
Hydraena pensylvanica
Hydraena pensylvanica is a species of minute aquatic beetle in the family Hydraenidae, first described by Kiesenwetter in 1849. Despite its specific epithet suggesting a Pennsylvania origin, this species occurs across eastern North America. Like other members of the genus Hydraena, it inhabits shallow freshwater habitats. The species is poorly documented in recent literature, with only a handful of observations recorded on community science platforms.
Hydrobiomorpha
Hydrobiomorpha is a genus of water scavenger beetles in the family Hydrophilidae, established by Blackburn in 1888. The genus contains 56 extant described species distributed across tropical and subtropical regions, with additional fossil species known from the Cenozoic. Members are aquatic beetles associated with freshwater habitats.
Hydrocanthus atripennis
Hydrocanthus atripennis is a species of burrowing water beetle in the family Noteridae. It is found in North America. The species belongs to the suborder Adephaga, a group of primarily predatory beetles. As a member of the Noteridae, it is adapted to aquatic or semi-aquatic habitats.
Hydrocanthus oblongus
Hydrocanthus oblongus is a small burrowing water beetle in the family Noteridae. The species inhabits aquatic environments in the Caribbean and North America. Like other noterids, it has been observed in shallow, muddy substrates where it burrows. The species was described by David Sharp in 1882.
Hydrochara obtusata
Hydrochara obtusata is a species of water scavenger beetle in the family Hydrophilidae, found across northern North America. The species was originally described as Hydrophilus obtusatus by Thomas Say in 1823, with a neotype designated in a 1980 revision of the genus Hydrochara. It belongs to a genus of 21 recognized species of aquatic beetles.
Hydrochus callosus
Hydrochus callosus is a species of water scavenger beetle in the family Hydrochidae, first described by John Lawrence LeConte in 1855. The species is found in the southeastern United States, with records from Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, South Carolina, and Texas. Hydrochidae are small aquatic beetles typically associated with freshwater habitats.
Hydrochus jaechi
Hydrochus jaechi is a small water scavenger beetle described in 1995 from the southeastern United States. The species belongs to the family Hydrochidae, a group of minute beetles associated with aquatic and semi-aquatic habitats. Known from scattered records across Florida, Louisiana, Mississippi, and Texas, it remains poorly documented in the scientific literature.
Hydrochus simplex
Hydrochus simplex is a small water scavenger beetle in the family Hydrochidae, a group sometimes treated as a subfamily within Hydrophilidae. The species was described by John Lawrence LeConte in 1855 and is documented from the southeastern United States and the Bahamas. Like other hydrochids, it occupies aquatic or semi-aquatic habitats.
Hydrocolus
Hydrocolus is a genus of small predaceous diving beetles in the family Dytiscidae, subfamily Hydroporinae. The genus was erected in 2000 to accommodate several species previously placed in related genera, particularly Hydroporus. It contains approximately twelve described species distributed primarily in North America, with some species known from northern Europe. Species are associated with lentic and lotic freshwater habitats.
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 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.
Hydrocolus stagnalis
Hydroporus Diving Beetle
Hydrocolus stagnalis is a small predaceous diving beetle in the family Dytiscidae, native to North America. Formerly classified under Hydroporus, it was reassigned to the genus Hydrocolus. The species is documented from western Canada, including Alberta and British Columbia. As a member of the Hydroporinae subfamily, it inhabits freshwater environments.
Hydrophilus ensifer
Hydrophilus ensifer is a large water scavenger beetle in the family Hydrophilidae, distributed throughout the Americas from Argentina to the southern United States. Adults typically measure 30–37 mm in length, making them among the largest aquatic insects. Two subspecies are recognized: H. e. ensifer and H. e. duvali, though their distinguishing characteristics remain poorly understood.
Hydrophilus insularis
Hydrophilus insularis is a water scavenger beetle in the family Hydrophilidae. It is distributed across a broad geographic range from northern South America through the Caribbean, Central America, and Mexico into the southern United States. The species is aquatic and belongs to a genus known for scavenging behavior in freshwater habitats.
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 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 occidentalis
Hydroporus occidentalis is a species of predaceous diving beetle in the family Dytiscidae, described by Sharp in 1882. The species is known from North America, with records from the Canadian provinces of Alberta and British Columbia. As a member of the genus Hydroporus, it is a small to medium-sized diving beetle adapted to aquatic habitats.
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 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.
Hydroscapha redfordi
Hydroscapha redfordi is a species of skiff beetle in the family Hydroscaphidae, described in 2010 from specimens collected in the southwestern United States. The species is named in honor of actor and conservationist Robert Redford. Members of this genus are among the smallest beetles, inhabiting thin water films on rocks in streams and waterfalls.
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 dissimilis
Hygrotus dissimilis is a species of diving beetle in the family Dytiscidae, subfamily Hydroporinae. It was described by Gemminger and Harold in 1868. The species is placed in the genus Hygrotus, a group of small to medium-sized predatory beetles associated with aquatic habitats. As with many diving beetles, specific ecological and behavioral details for this species remain limited in published literature.
Hygrotus falli
Hygrotus falli is a diving beetle species in the family Dytiscidae, originally described by Wallis in 1924 under the basionym Coelambus falli. The species belongs to a genus of small to medium-sized predatory diving beetles commonly found in freshwater habitats. As with other members of Dytiscidae, it is likely adapted to aquatic life with modified hind legs for swimming, though specific ecological details for this species remain poorly documented in available sources.
Hygrotus patruelis
Hygrotus patruelis is a species of diving beetle in the family Dytiscidae, first described by John Lawrence LeConte in 1855. It belongs to the genus Hygrotus, a group of small to medium-sized predaceous diving beetles commonly found in aquatic habitats. The species is recorded from North America. Like other dytiscids, it is adapted to underwater life with specialized respiratory structures.
Hygrotus picatus
Hygrotus picatus is a species of predaceous diving beetle in the family Dytiscidae. It is native to North America and belongs to a genus of small to medium-sized diving beetles commonly found in freshwater habitats. The species was first described by William Kirby in 1837. Like other members of Dytiscidae, it is adapted to aquatic life with streamlined bodies and modified hind legs for swimming.
Hygrotus punctilineatus
Hygrotus punctilineatus is a small diving beetle in the family Dytiscidae, subfamily Hydroporinae. It is one of many North American species in the genus Hygrotus, which are generally associated with lentic freshwater habitats. The species was described by Fall in 1919 based on specimens from North America. Like other members of Hygrotus, it is presumed to be an aquatic predator in standing water bodies, though specific ecological studies are limited.
Hygrotus salinarius
Hygrotus salinarius is a small diving beetle in the family Dytiscidae, originally described as Coelambus salinarius by Wallis in 1924. The species is native to North America and belongs to a genus commonly associated with saline or alkaline wetlands. Like other members of Dytiscidae, it is an aquatic predator as both larva and adult. Specific ecological 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.
Hygrotus tumidiventris
Hygrotus tumidiventris is a small diving beetle in the family Dytiscidae, originally described as Coelambus tumidiventris by Fall in 1919. It belongs to the subfamily Hydroporinae, a diverse group of predominantly small predatory aquatic beetles. The species is known from North America, though specific ecological details remain poorly documented. Like other Hygrotus species, it likely inhabits shallow freshwater habitats.
Hygrotus turbidus
Hygrotus turbidus is a species of diving beetle in the family Dytiscidae. It belongs to the subfamily Hydroporinae, a group of small to medium-sized predaceous diving beetles. The species was described by John Lawrence LeConte in 1855 and is known from North America. Like other members of the genus Hygrotus, it is likely associated with freshwater aquatic habitats.
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 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.
Laccobius agilis
Agile Laccobius Scavenger
Laccobius agilis is a species of water scavenger beetle in the family Hydrophilidae. It is native to North America and has been recorded across a broad geographic range including much of Canada and the United States. The species is one of approximately 200 described species in the genus Laccobius, which are primarily associated with aquatic and semi-aquatic habitats. Observations of this species are relatively sparse, with limited detailed ecological information available in published literature.
Laccobius borealis
Laccobius borealis is a species of water scavenger beetle in the family Hydrophilidae. It has been recorded across northern and western North America, from Alaska and Canada through the western United States to Mexico. The species belongs to a genus of small aquatic beetles commonly found in freshwater habitats.
Laccobius spangleri
A small water scavenger beetle in the family Hydrophilidae, known from eastern and central North America. Adults are associated with aquatic and semi-aquatic habitats. The species is one of approximately 50 Laccobius species worldwide, with most occurring in the Northern Hemisphere.
Laccophilus
Laccophilus is a genus of small diving beetles in the family Dytiscidae, distributed across temperate and tropical regions worldwide. These beetles inhabit freshwater environments and are characterized by their compact, oval bodies and relatively short antennae. The genus contains numerous species, though many remain poorly documented. Members are active swimmers and predators in aquatic ecosystems.
Laccophilus fasciatus terminalis
Laccophilus fasciatus terminalis is a subspecies of diving beetle in the family Dytiscidae, described by Sharp in 1882. As a member of the genus Laccophilus, it belongs to a group of small predatory aquatic beetles commonly known as crawling water beetles. The subspecies designation indicates geographic or morphological variation within the widespread species Laccophilus fasciatus. Like other laccophilines, it inhabits freshwater environments where it preys on small invertebrates.
Laccophilus gentilis
Laccophilus gentilis is a small predatory diving beetle in the family Dytiscidae, described by LeConte in 1863. It belongs to the subfamily Laccophilinae, a group of small, often brightly marked diving beetles commonly found in vegetated freshwater habitats. The species occurs in North America and Middle America. Like other members of its genus, it is an aquatic predator that likely inhabits ponds, marshes, and slow-moving waters with abundant vegetation.
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.