Oulimnius

Oulimnius is a genus of riffle beetles in the family Elmidae. There are about 15 described species in Oulimnius.

==Species== These 15 species belong to the genus Oulimnius: Oulimnius aegyptiacus (Kuwert, 1890) Oulimnius bertrandi Berthélemy, 1964 Oulimnius cyneticus Berthélemy, 1980 Oulimnius echiinatus Berthélemy, 1979 Oulimnius fuscipes (Reiche, 1879) Oulimnius hipponensis Berthélemy, 1979 Oulimnius jaechi Hernando, Ribera & Aguilera, 1998 Oulimnius latiusculus (LeConte, 1866) Oulimnius maurus Berthélemy, 1979 Oulimnius nitidulus (Leconte, 1866) Oulimnius perezi (Sharp, 1872) Oulimnius reygassei (Peyerimhoff, 1929) Oulimnius troglodytes (Gyllenhal, 1827) Oulimnius tuberculatus (Müller, 1806) Oulimnius villosus Berthélemy, 1979