Freshwater-predator
Guides
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.
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.
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.
Gomphurus crassus
Handsome Clubtail
Gomphurus crassus, commonly known as the Handsome Clubtail, is a species of dragonfly in the family Gomphidae. It is a member of the genus Gomphurus, which was historically treated as a subgenus of Gomphus but has been elevated to full generic status based on molecular and morphological evidence. The species is characterized by its robust body form and distinctive clubbed abdomen typical of the family. As an odonate predator, it occupies freshwater habitats where it hunts smaller insects.
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 bimarginatus
Hydaticus bimarginatus is a species of predaceous diving beetle in the family Dytiscidae, occurring across North America. The species is moderately well-documented with over 1,000 observations on iNaturalist, indicating established presence in aquatic habitats. As a member of Hydaticus, it is associated with lentic and lotic freshwater systems where it functions as an active predator.
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 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.
Limnoporus canaliculatus
water strider
Limnoporus canaliculatus is a species of water strider in the family Gerridae, distributed across North America. It inhabits freshwater environments where it uses surface tension to skate on water. The species was originally described as Gerris canaliculatus by Thomas Say in 1832 and later transferred to the genus Limnoporus. Like other gerrids, it is predatory, capturing small arthropods that fall onto the water surface.
Perlinodes aurea
Perlinodes aurea is a species of stonefly in the family Perlodidae. The genus Perlinodes is part of the subfamily Isoperlinae, a group of predatory stoneflies characterized by their streamlined bodies and aquatic larval stages. Like other members of Perlodidae, P. aurea has a life cycle tied to clean, well-oxygenated freshwater habitats. Adult stoneflies are generally short-lived and do not feed, focusing instead on reproduction. The specific epithet "aurea" (golden) likely refers to coloration characteristics of the species.
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.