Fluminicola multifarius Hershler, Liu, Frest & Johannes, 2007

Hershler, Robert, Liu, Hsiu-Ping & Hubbart, Niko, 2017, Two new species of Fluminicola (Caenogastropoda, Lithoglyphidae) from southwest Oregon, USA, and a range extension for F. multifarius, ZooKeys 679, pp. 1-20 : 5-6

Fluminicola multifarius Hershler, Liu, Frest & Johannes, 2007 Figs 3, 4 A–D

Fluminicola multifarius . - Hershler et al. 2007: 415, 417, 419, figs. 7M, 24, 25 (Big Springs (source) at Big Springs City Park northwest of the city of Mount Shasta, south of Spring Hill, Siskiyou County, California ([UTM zone 10] 556400 E, 4575265 N, 1092 m).

Distribution.

Sacramento River headwater region (as far downflow as Conant), and a few sites in the upper reaches of the McCloud River drainage ( Hershler et al. 2007).

Referred material.

OREGON. Jackson County. USNM 1144635, USNM 1145050, USNM 1145051, USNM 1297159, spring run on east side of BLM 37-3E-31.0, 0.24 rd. km north of BLM 38-2E-11 junction (42.2996°N, 122.5198°W), USNM 1144556, USNM 1145001, USNM 1144557, USNM 1145002, USNM 1297160, spring influenced creek at BLM 37-3E-31.0 crossing, 0.32 rd. km north of BLM 38-2E-11.0 junction (42.3001°N, 122.5198°W), USNM 1144554, USNM 1144555, USNM 1144999, USNM 1145000, USNM 1297161, spring influenced creek at crossing of BLM 38-2E-11, 1.26 rd. km east of BLM 37-3E-31.0 (42.2890°N, 122.5262°W), USNM 1144582, USNM 1144583, USNM 1144584, USNM 1144682, USNM 1145010, USNM 1145011, USNM 1145012, USNM 1297162, spring on north side of Burnt Creek Road (BLM 39-3E-21.0), 0.64 rd. km south of BLM 39-3E-32.1 junction, 1.29 km northwest of Cottonwood Glades, 3.22 rd. km south of Dead Indian Memorial Road (Jackson County 722) (42.2212°N, 122.5008°W), USNM 1144580, USNM 1144581, USNM 1144928, USNM 1297163, Cold Spring on south side of Burnt Creek Road (BLM 39-3E-21.0), 0.8 rd. km east of junction with BLM 39-3E-17.0 (42.1944°N, 122.5120°W), USNM 1144547, USNM 1144548, USNM 1144681, USNM 1144927, USNM 1144996, USNM 1144997, USNM 1297164, spring run above (north of) and below BLM 39-3E-17.0, ca. 0.56 rd. km north of BLM 39-3E-18.1 junction, northeast of Round Mountain (42.1814°N, 122.5076°W), USNM 1144566, USNM 1144567, USNM 1144909, USNM 1297165, spring on east side of (above) BLM 40-2E-35.0 at MP 0.35 off BLM 40-2E-33, east of Emigrant Creek, north of Pilot Rock, west of Porcupine Mountain (42.0438°N, 122.5612°W), USNM 1144607, USNM 1144916, spring on south side of BLM road, 0.16 km off BLM 40-2E-33, east of Emigrant Creek, north of Pilot Rock, southwest of Porcupine Mountain (42.0387°N, 122.5614°W), USNM 1144609, USNM 1144930, Sampson Creek on both sides of BLM 38-3E-18.1 (42.1869°N, 122.5167°W), USNM 1144614, USNM 1144686, USNM 1145027, USNM 1145028, spring south of Hobart Lake, west of Hobart Bluff, 0.21 km east of BLM 39-3E-32.3, 0.64 km north of Hobart Peak (42.0933°N, 122.4799°W).

Comparative material.

CALIFORNIA. Siskiyou County. USNM 1070753, Big Springs (source) at Big Springs City Park northwest of the city of Mount Shasta, south of Spring Hill, USNM 1020771, Bundoora Spring, west of access road off FS40N44.

Remarks.

The newly reported populations closely conform to the original description of F. multifarius in all respects aside from a slightly larger maximum shell height (5.02 vs. 4.64 mm). Representative Rogue basin specimens are illustrated in Figures 3 A–C (shells), 3 D–E (opercula), 3 F–H (radula) and 4A, B, D (reproductive anatomy). Ten COI and cytB haplotypes were detected in the Rogue basin populations (Suppl. material 2-3, respectively).

The new records detailed herein extend the range of F. multifarius about 80 km northward from the Sacramento River headwaters (Fig. 2). It is not known whether F. multifarius is also distributed in the intervening Klamath River basin; the pebblesnail fauna of this large watershed is currently undescribed. Populations of F. multifarius in the Rogue basin were referred to as the Chinquapin pebblesnail, Emigrant pebblesnail, Keene Creek pebblesnail, Little Butte pebblesnail, and Pilot Rock pebblesnail by Frest and Johannes (2000, 2004, 2005).