Optioservus
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 White, 1978
- Optioservus canus Chandler, 1954
- Optioservus castanipennis
- Optioservus divergens
- Optioservus fastiditus
- Optioservus heteroclitus White, 1978
- Optioservus immunis
- Optioservus ovalis
- Optioservus phaeus White, 1978
- Optioservus quadrimaculatus
- Optioservus sandersoni Collier, 1972
- Optioservus seriatus
- ''Optioservus trivittatus''