Aquatic-beetle
Guides
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 pictus coccinelloides
Laccophilus pictus coccinelloides is a subspecies of diving beetle in the family Dytiscidae, first described by Régimbart in 1889. It belongs to the genus Laccophilus, a group of small predatory diving beetles commonly found in aquatic habitats. The subspecies epithet 'coccinelloides' suggests a resemblance to ladybird beetles (Coccinellidae), likely referring to coloration or patterning. Like other members of its genus, this beetle is adapted to freshwater environments where it preys on small aquatic organisms.
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 sonorensis
Laccophilus sonorensis is a species of predaceous diving beetle in the family Dytiscidae, described by Zimmerman in 1970. It belongs to the genus Laccophilus, a group of small to medium-sized diving beetles commonly found in aquatic habitats. The species is distributed in Middle America. Very little specific information is available about its biology or ecology.
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 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.
Limnichites nebulosus
Limnichites nebulosus is a species of minute marsh beetle in the family Limnichidae, described by LeConte in 1879. The genus Limnichites is part of the subfamily Limnichinae within the small beetle superfamily Dryopoidea. These beetles are associated with aquatic and semi-aquatic habitats. The species has been recorded from North America and Middle America based on distribution data.
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.
Lioporeus triangularis
Lioporeus triangularis is a species of predaceous diving beetle in the family Dytiscidae. Originally described as Hydroporus triangularis by Fall in 1917, it was later transferred to the genus Lioporeus. The species is known from North America and belongs to the subfamily Hydroporinae, a diverse group of small to medium-sized diving beetles.
Listronotus manifestus
Listronotus manifestus is a species of underwater weevil in the family Curculionidae. It was described by Henderson in 1941. The species is known to occur in North America. Very little published information exists regarding its biology, ecology, or specific habitat requirements.
Listronotus sordidus
Underwater weevil
Listronotus sordidus is a species of underwater weevil in the beetle family Curculionidae, native to North America. It has been investigated as a potential biological control agent for the invasive aquatic plant Sagittaria platyphylla in South Africa, though habitat incompatibility issues have affected its suitability. The species is distinguished by its aquatic lifestyle, which is unusual among weevils.
Lutrochus arizonicus
Lutrochus arizonicus is a species of travertine beetle in the family Lutrochidae, described by Brown & Murvosh in 1970. The species is known from North America and belongs to a small family of beetles associated with travertine (calcium carbonate) deposits in aquatic environments. As a member of the genus Lutrochus, it likely inhabits freshwater habitats with mineral-rich substrates, though specific ecological details remain limited in available sources.
Lutrochus luteus
travertine beetle
Lutrochus luteus is a species of travertine beetle in the family Lutrochidae, first described by LeConte in 1852. It is found in North America. The species belongs to a small family of aquatic beetles commonly known as travertine beetles, which are associated with freshwater habitats.
Macrelmis texana
Macrelmis texana is a species of riffle beetle in the family Elmidae, described by Schaeffer in 1911. It belongs to a genus of aquatic beetles adapted to living in fast-flowing water. The species has been recorded from both Central America and North America.
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.
Mesonoterus addendus
Mesonoterus addendus is a small diving beetle species in the family Noteridae, first described by Blatchley in 1920. The species belongs to a genus of burrowing water beetles adapted to aquatic habitats. Based on the limited available records, this species has been documented from the Caribbean and North America. The genus Mesonoterus contains species typically associated with shallow, often temporary aquatic habitats where they burrow in muddy or sandy substrates.
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.
Microcylloepus similis
Microcylloepus similis is a species of riffle beetle (family Elmidae) described by Horn in 1870. It belongs to a group of aquatic beetles commonly known as elmids or riffle beetles, which are characteristic inhabitants of flowing water habitats. The species is part of the genus Microcylloepus, a group of small aquatic beetles within the subfamily Elminae.
Mystonectes titulus
Mystonectes titulus is a species of diving beetle in the family Dytiscidae, subfamily Hydroporinae. It is a small predatory aquatic beetle inhabiting freshwater environments. The species was described by Leech in 1945 and is known from North America.
Narpus angustus
Riffle beetle
Narpus angustus is a species of riffle beetle in the family Elmidae, described by Casey in 1893. It is known from North America. Riffle beetles in this family are typically associated with aquatic environments, particularly flowing water habitats.
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.
Nectoboreus
Nectoboreus is a genus of diving beetles in the family Dytiscidae, subfamily Hydroporinae. The genus was described in 2018 by Fery and Ribera based on species previously assigned to other genera, particularly within the Deronectina subtribe. Members of this genus are small to medium-sized predatory aquatic beetles. As a recently established genus, its species-level taxonomy and biology remain under investigation.
Neobidessus pullus
Neobidessus pullus is a small predaceous diving beetle in the family Dytiscidae. The species occurs across North America and extends into the Neotropics. Two subspecies are recognized: the nominate N. p. pullus and N. p. floridanus described from Florida. As a member of the tribe Bidessini, it inhabits aquatic environments where it functions as an active predator.
Neochthebius vandykei
minute moss beetle
Neochthebius vandykei is a species of minute moss beetle in the family Hydraenidae. It was described by Knisch in 1924. The species is found in western North America, with records from British Columbia, Canada and California, USA. Like other members of Hydraenidae, it is a small beetle associated with moist habitats.
Neoclypeodytes quadripustulatus
A small diving beetle in the genus Neoclypeodytes, characterized by the distinctive elytral pattern of four maculae (two per elytron) that is diagnostic for the genus. The species was described by Fall in 1917 and occurs in western North America. A lectotype was designated in the 2001 revision by Young.
Neoclypeodytes roughleyi
Neoclypeodytes roughleyi is a species of small diving beetle described by K.B. Miller in 2001 during a comprehensive revision of the genus Neoclypeodytes. It is one of eleven new species described in that revision, which recognized 25 valid species in this western North American and northern Central American genus. The genus is characterized by a distinctive pattern of two maculae on each elytron, the only known synapomorphy supporting its monophyly. As a member of the Bidessini tribe within Hydroporinae, it belongs to a group of small, often overlooked aquatic beetles.
Neohaemonia nigricornis
Neohaemonia nigricornis is an aquatic leaf beetle in the family Chrysomelidae, subfamily Donaciinae. The species inhabits freshwater environments in North America, with a distribution spanning the northern United States and southern Canada. As a member of the tribe Haemoniini, it shares adaptations for aquatic life with related genera, though specific biological details remain poorly documented in published literature.
Neoporus arizonicus
Neoporus arizonicus is a species of predaceous diving beetle in the family Dytiscidae, subfamily Hydroporinae. First described by Fall in 1917 under the basionym Hydroporus arizonicus, this species is currently classified in the genus Neoporus. It is a small diving beetle known from the southwestern United States, with Arizona representing the core of its known distribution. Like other members of the Hydroporinae, it is adapted to aquatic habitats where it preys on small invertebrates.
Neoporus dilatatus
Neoporus dilatatus is a species of predaceous diving beetle in the family Dytiscidae, subfamily Hydroporinae. It is a small aquatic beetle native to North America. The species was originally described as Hydroporus dilatatus by Fall in 1917 and later transferred to the genus Neoporus. Like other members of Dytiscidae, it is adapted to life in freshwater habitats.
Neoporus gaudens
Neoporus gaudens is a small diving beetle in the family Dytiscidae, subfamily Hydroporinae. The species was described by Fall in 1923 and is currently accepted as valid. Like other members of the genus Neoporus, it is presumed to be an aquatic predator inhabiting freshwater systems. Available records indicate presence in North America, though detailed biological information remains limited.
Neoporus hebes
Neoporus hebes is a small diving beetle (family Dytiscidae) described by Fall in 1923. As a member of the subfamily Hydroporinae, it inhabits freshwater aquatic environments. The genus Neoporus comprises numerous small dytiscid species found primarily in North America. This species is among the lesser-documented members of the genus, with limited observational records available.
Neoporus hybridus
Neoporus hybridus is a diving beetle species in the family Dytiscidae, first described by Aubé in 1838. Originally placed in the genus Hydroporus, it was later transferred to Neoporus. The species belongs to the subfamily Hydroporinae, a diverse group of small to medium-sized predatory aquatic beetles. Records indicate presence in North America, though detailed biological studies appear limited in the available literature.
Neoporus lobatus
Neoporus lobatus is a species of diving beetle in the family Dytiscidae, first described by Sharp in 1882. It belongs to the subfamily Hydroporinae, a diverse group of small predatory aquatic beetles. The genus Neoporus comprises small dytiscids found primarily in North America. Like other members of its family, this species is aquatic and occupies freshwater habitats.
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 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.
Nyholmia collaris
Nyholmia collaris is a species of marsh beetle in the family Scirtidae. It has been recorded across eastern Canada and is present in North America generally. The species was originally described by Guérin-Méneville in 1843 and is currently classified under the genus Nyholmia, though it was previously placed in Cyphon.
Ochthebius puncticollis
minute moss beetle
Ochthebius puncticollis is a species of minute moss beetle in the family Hydraenidae, first described by John Lawrence LeConte in 1852. This small beetle is known from arid and semi-arid regions of southwestern North America, with records from Arizona, California, and Utah in the United States, as well as Mexico. Like other members of its genus, it is associated with moist microhabitats in otherwise dry environments, typically inhabiting the margins of streams, springs, and seeps where moss and algae grow.
Oosternum pubescens
Oosternum pubescens is a species of water scavenger beetle in the family Hydrophilidae, described by John Lawrence LeConte in 1855. It belongs to the subfamily Sphaeridiinae, a group of small to minute beetles often associated with moist or aquatic environments. The species is known from eastern and central North America, with records spanning from the northeastern United States through the Midwest and south to Florida and Texas. Like other members of its genus, it is presumed to inhabit moist microhabitats, though detailed ecological studies remain limited.
Optioservus
Optioservus is a former genus of riffle beetles (family Elmidae) established by Sanderson in 1954. As of 2021, it is recognized as a junior synonym of Heterlimnius. The genus formerly contained approximately 13 species distributed in the Nearctic region, including several species described by White in 1978. Species-level identification historically relied on variable external characters; a 1978 revision established more reliable diagnostic criteria based on male genitalia, elytral patterns, and geographic distribution.