Surface-water
Guides
Brachydeutera
Brachydeutera is a genus of shore flies in the family Ephydridae, containing approximately 16 described species. Members of this genus are characterized by their association with aquatic or semi-aquatic habitats, where they occupy the hyponeustic zone—living just below the water surface. The genus was established by Loew in 1860 and has been documented across various regions with observations spanning multiple continents.
Gyrinus latilimbus
Gyrinus latilimbus is a species of whirligig beetle in the family Gyrinidae, described by Fall in 1922. As a member of the genus Gyrinus, it belongs to the smaller of the two genera of whirligig beetles found in North America. Whirligig beetles are highly specialized aquatic insects that inhabit the water surface film, where they exhibit characteristic rapid, erratic circling movements in aggregations called rafts. The genus Gyrinus is distinguished from the larger genus Dineutus primarily by smaller body size and exposed scutellum.