Fluminicola nuttallianus (Dusky Pebblesnail)

[sebbe67]

Fluminicola nuttalianus

extinct Oregon freshwater snail

[another specialist]

correct spelling is Fluminicola nuttallianus

[another specialist]

Taxonomic Comments: Hershler and Frest (1996) recognize this species as distinct from a larger undescribed form from the Willamette River, and distinct from one or more forms found elsewhere in Washington and Oregon. These forms have frequently been confused with F. NUTTALLIANUS.

Rounded Global Status: G1 - Critically Imperiled
Reasons: Could be extinct; 1991 and 1994 surveys in the vicinity of Willamette Falls failed to find any specimens (Hershler and Frest 1996); former habitat is now highly industrialized.

Global Range Comments: Once thought to inhabit the entire Columbia valley, but as revised by Hershler and Frest (1996), only found in lowermost Willamette River, and possibly lower Columbia River below Portland, Oregon.

www.natureserve.org/

[Sebbe]

Hershler, R. and H.-P. Liu. 2017. Annotated checklist of freshwater truncatelloidean gastropods
of the western United States, with an illustrated key to the genera. Technical Note 449.

Fluminicola nuttallianus (Lea, 1838)
Paludina nuttalliana Lea, 1838: 101, pl. XXIII: fig. 89. Wahlamat [sic, misspelling of
Willamette] River, near its junction with the Columbia River [Oregon].
Lectotype, USNM 121467; paralectotypes, USNM 860648.
Common name: Dusky pebblesnail.
Distribution: Restricted to the type locality near the mouth of the Willamette River
(Oregon).
Taxonomy: Hershler and Frest (1996).
Remarks: This species is known only from shells. It has not been collected for more
than 100 years and may be extinct (Hershler and Frest 1996).

repository.si.edu/handle/10088/35012