Gravel-dwelling
Guides
Brychius hornii
Horn's Crawling Water Beetle
Brychius hornii is a species of crawling water beetle in the family Haliplidae, first described by George Robert Crotch in 1873. It is native to western North America, where adults inhabit small streams and irrigation ditches, primarily on gravel substrates. The species belongs to a small genus of aquatic beetles adapted to life in running water environments.