Acneus

Acneus is a genus of water penny beetles in the family Psephenidae. There are at least four described species in Acneus.

Species
These four species belong to the genus Acneus:
 * Acneus beeri Hatch, 1961
 * Acneus burnelli (Fender, 1962)
 * Acneus oregonensis Fender, 1951
 * Acneus quadrimaculatus Horn, 1880