Freshwater-invertebrates
Guides
Colymbetinae
Colymbetinae is a subfamily of predaceous diving beetles in the family Dytiscidae, containing approximately 11 genera and at least 130 described species. Members are aquatic predators found in diverse freshwater habitats across multiple continents. The subfamily includes the genera Colymbetes, Rhantus, Meladema, and others, with some species serving as indicators of wetland conservation value.
Diplectrona
diplectronan caddisflies
Diplectrona is a genus of net-spinning caddisflies in the family Hydropsychidae, containing over 100 described species distributed across multiple continents. The genus exhibits considerable morphological diversity in both larvae and adults, with larvae inhabiting various lotic freshwater habitats. Recent studies have revealed cryptic diversity within currently recognized species, particularly in North America, suggesting the genus requires taxonomic revision. Species occur in Asia, Europe, North America, and other regions, with new country records continuing to be documented.
Haliplus
crawling water beetles
Haliplus is a genus of small crawling water beetles comprising at least 180 described species. Members range from 1.75 to 5 mm in length and inhabit freshwater margins worldwide except Antarctica. The genus has been subject to recent taxonomic revision, including synonymization of H. wehnckei with H. sibiricus based on morphometric and genetic evidence.