Optioservus

Optioservus was a genus of riffle beetles in the family Elmidae; as of 2021 it is a junior synonym of Heterlimnius.^[1] There were about 13 described species in Optioservus.^[2][3][4]

Optioservus
Optioservus larva
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Suborder:	Polyphaga
Infraorder:	Elateriformia
Family:	Elmidae
Subfamily:	Elminae
Tribe:	Elmini
Genus:	Optioservus Sanderson, 1954

Species

• Optioservus browni White, 1978 (Brown's optioservus riffle beetle)
• Optioservus canus Chandler, 1954 (pinnacles optioservus riffle beetle)
• Optioservus castanipennis (Fall, 1925)
• Optioservus divergens (LeConte, 1874)
• Optioservus fastiditus (LeConte, 1850)
• Optioservus heteroclitus White, 1978
• Optioservus immunis (Fall, 1925)
• Optioservus ovalis (LeConte, 1863)
• Optioservus phaeus White, 1978 (Scott optioservus riffle beetle)
• Optioservus quadrimaculatus (Horn, 1870)
• Optioservus sandersoni Collier, 1972
• Optioservus seriatus (LeConte, 1874)
• Optioservus trivittatus (Brown, 1930)