didelmis
Didelmis is a genus of riffle beetles in the family Elmidae. Members of this genus are aquatic beetles whose life cycle includes both larvae and adults that spend their entire lives in freshwater habitats, typically on submerged substrates such as rocks, wood, and vegetation in streams and rivers.
Taxonomy and identification within the Elmidae place Didelmis in the order Coleoptera. The genus comprises multiple
Morphology and lifestyle are characteristic of many Elmidae. Didelmis beetles are generally small to medium-sized with
Habitat and ecology of Didelmis species emphasize clean, fast-flowing water. They are often associated with riffles
Distribution is largely in the Americas, with many described species from Central and South American freshwater