Cottus ohlone ohlone Moyle and Campbell 2022

Moyle, Peter B. & Campbell, Matthew A., 2022, Cryptic Species of Freshwater Sculpin (Cottidae: Cottus) in California, USA, Zootaxa 5154 (5), pp. 501-527 : 518-519

Cottus ohlone ohlone Moyle and Campbell 2022 . Nominate subspecies, Ohlone Riffle Sculpin.

Holotype and paratypes. Same as for the species, C. ohlone .

Diagnosis. Distinguished from other members of the C. gulosus complex as a distinct lineage as determined by genetic and genomic studies ( Baumsteiger et al. 2014, this study) and by its distinctive distribution ( Fig. 3 ).

Description. Same as for C. ohlone above ( Fig. 1 ).

Distribution. Largely restricted to upper portions of streams in and around the highly urbanized (e.g., San Jose) Santa Clara Valley, including the upper Guadalupe River and upper Penitencia Creek, which is tributary to Coyote Creek. All known locations occur west of the Coast Range (Diablo Range), in the hills around the Santa Clara Valley, or in streams flowing into San Francisco Bay from the Coast Range. The southernmost sample collected was from Bird Creek, near Hollister Hills (see Baumsteiger et al. 2014). The northernmost location known was San Mateo Creek ( Jordan and Everman 1896) from which they have been extirpated ( Leidy 2007).

Figures

FIGURE 1. Inland (A, B) and Coastal (C, D) Riffle Sculpins from the UC Davis Museum of Wildlife and Fish Biology. (A) San Joaquin Riffle Sculpin, Cottus gulosus gulosus. WFB-277-08-09. Kaweah River, Tulare County, California (68 mm SL, 82 mm TL). Coll. Larry Brown, September 10, 1985. Holotype is same as for C. gulosus (USNM 291). (B) Sacramento Riffle Sculpin, Cottus gulosus wintu. Holotype WFB-3464. North Fork Feather River, Butte County, California (78 mm SL, 96 mm TL). Coll. Jason Baumsteiger, October 5, 2017. (C) Coastal Riffle Sculpin, Cottus ohlone. Holotype. WFB-3402.Also, holotype for Ohlone Sculpin, C. o. ohlone. Guadalupe River, Santa Clara County, California (65 mm SL, 79 mm TL). Coll: J. J. Smith, November 18, 1986. (D) Pomo Riffle Sculpin, Cottus ohlone pomo. Holotype. WFB-3396. Pieta Creek near mouth on Russian River, Mendocino County, California (90 mm SL, 105 mm TL). Coll. P Moyle, J. Baumsteiger, August 2, 2017.

FIGURE 3. (A) Distribution of Cottus pitensis in northeastern California (light green). This distribution is mostly in streams of the Pit River basin in California but extends into Oregon tributaries of Goose Lake (upper right corner of map). (B) Drawing of C. pitensis holotype from Bailey and Bond (1963), collected from the North Fork Pit River, Modoc County, CA.