Fluminicola fresti Hershler, Liu, Frest & Hubbart, 2017

Liu, Hsiu-Ping & Hershler, Robert, 2019, A new species and range extensions for three other species of pebblesnails (Lithoglyphidae, Fluminicola) from the upper Klamath basin, California-Oregon, ZooKeys 812, pp. 47-67 : 55-56

Fluminicola fresti Hershler, Liu, Frest & Hubbart, 2017 Figure 4H

Fluminicola fresti - Hershler et al. 2017: 10-14, figs 4 E–G, 5 (Diversion from Big Butte Springs through Butte Falls Hatchery, just south of Butte Falls–Fish Lake Road (Jackson County 321) and 0.16 km west of Butte Falls–Prospect Road (Jackson County 922), Jackson County, Oregon, 42.5389N, 122.5551W).

Distribution.

North Fork Umpqua River drainage and Rogue River basin north of Little Butte Creek, Oregon ( Hershler et al. 2017).

Referred material.

OREGON. Klamath County. USNM 1144900, USNM 1469091, Harriman Spring, outflow of main spring (42.4673N, 122.1009W),

Remarks.

The Harriman Springs pebblesnails have small (shell height, about 4.0 mm), narrowly conical shells with convex whorls that well conform to F. fresti ; they also closely resemble this species in details of radula morphology. Radula: central teeth with 3-4 lateral cusps, 1 basal cusp; lateral teeth with 3-4 cusps on outer side, 2 cusps on inner side; inner marginal teeth with 23-28 cusps; outer marginal teeth with 28-36 cusps(USNM 1144900).

We sequenced only a single specimen of F. fresti from Harriman Springs, which was collected during our first visit to this locality. Our subsequent collections from this site that were preserved in 90% ethanol for mtDNA analysis did not contain this species although a few specimens were found in one of the subsamples that had been prepared for anatomical study.

This new record extends the range of F. fresti about 26 km eastward from the Rogue River headwaters.