Optioservus phaeus
White, 1978
Scott optioservus riffle beetle
Optioservus phaeus is a of riffle beetle ( Elmidae) described by White in 1978. It belongs to a of small aquatic beetles inhabiting running waters. The species was described as part of a taxonomic revision based on male genitalia, elytral patterns, and geographic distribution. It is known from a highly restricted range in Kansas.
Pronunciation
How to pronounce Optioservus phaeus: /ˌɒpti.oʊˈsɜrvəs ˈfiːəs/
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Identification
Identification relies on male genitalia, elytral pattern and shape, and geographic distribution. External characters are considered extremely variable and unreliable for -level identification in this .
Habitat
Riffle beetles (Elmidae) inhabit running water environments; specific microhabitat details for O. phaeus are not documented.
Distribution
Known only from Lake Scott State Park in Scott County, Kansas, North America.
Similar Taxa
- Optioservus canusCongeneric in the same , distinguished by male genitalia and elytral pattern
- Optioservus castanipennisCongeneric ; external variable, requiring examination of male genitalia for reliable separation
- Optioservus ovalisCongeneric with which it may be confused based on external appearance alone