A Revision of the Nearctic Optioservus (Coleoptera: Elmidae), with Descriptions of New Species
White DS. 1978. A Revision of the Nearctic Optioservus (Coleoptera: Elmidae), with Descriptions of New Species. Systematic Entomology. 3:59-74
ABSTRACT: Previous works on the nearctic Optioservus have relied on extremely variable external characters making specific identifications quite difficult. This revision is based on male genitalia, elytral patterns and shape, and geographic distribution. Keys and descriptions are presented for thirteen species: O.browni sp.n., O.canus, O.castanipennis, O.divergens [=pecosensissyn.n.], O.fastiditus, O.heteroclitussp.n., O.immunis [=cryophilussyn.n.], O.ovalis [=ampliatussyn.n.], O.phaeussp.n., O.quadrimaculatus, O.sandersoni [=ozarkensissyn.n.], O. seriatus, O.trivittatus.
- Type
- Journal Article
- Authors
- White, David
- Units
- SEQU
- Keywords
- Coleoptera, Elmidae, Insecta, new species, Optioservus heteroclitus