Freshwater-beetle
Guides
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.
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.
Narpus concolor
Narpus concolor is a species of riffle beetle in the family Elmidae, first described by LeConte in 1881. It is found in North America, with distribution records from Alberta and British Columbia in Canada. As a member of the Elmidae, it is associated with freshwater environments. The species has been documented in iNaturalist with limited observation records.
Promoresia tardella
Promoresia tardella is a species of riffle beetle in the family Elmidae, originally described by Fall in 1925. The species has undergone taxonomic reclassification, with modern sources treating it as a synonym of Optioservus tardellus. It has been recorded from North America, specifically from Vermont in the United States. As an elmid beetle, it likely inhabits freshwater environments, though specific ecological details remain poorly documented.
Scirtes tibialis
Red-legged Marsh Beetle
Scirtes tibialis is a species of marsh beetle in the family Scirtidae, commonly known as the Red-legged Marsh Beetle. It is native to North America with records from Canada (Alberta, Manitoba, New Brunswick) and the United States. The species has been the subject of life history studies, though detailed biological information remains limited in publicly available sources.