Optioservus was a genus of riffle beetles in the family Elmidae; as of 2021 it is a junior synonym of Heterlimnius. There were about 13 described species in Optioservus.
Species
- Optioservus browni <small>White, 1978</small> (Brown's optioservus riffle beetle)
- Optioservus canus <small>Chandler, 1954</small> (pinnacles optioservus riffle beetle)
- Optioservus castanipennis <small>(Fall, 1925)</small>
- Optioservus divergens <small>(LeConte, 1874)</small>
- Optioservus fastiditus <small>(LeConte, 1850)</small>
- Optioservus heteroclitus <small>White, 1978</small>
- Optioservus immunis <small>(Fall, 1925)</small>
- Optioservus ovalis <small>(LeConte, 1863)</small>
- Optioservus phaeus <small>White, 1978</small> (Scott optioservus riffle beetle)
- Optioservus quadrimaculatus <small>(Horn, 1870)</small>
- Optioservus sandersoni <small>Collier, 1972</small>
- Optioservus seriatus <small>(LeConte, 1874)</small>
- Optioservus trivittatus <small>(Brown, 1930)</small>
References
Further reading