Stygobromus sp.

Graening, G. O., Rogers, D. Christopher, Holsinger, John R., Barr, Cheryl & Bottorff, Richard, 2012, Checklist of Inland Aquatic Amphipoda (Crustacea: Malacostraca) of California, Zootaxa 3544, pp. 1-27 : 14

Stygobromus sp.

Records: All of the following determinations are from the ABL database unless otherwise cited. The general distribution of Stygobromus is shown in Figure 4. Alameda Co. upper San Leandro Creek, M. Born, 2000-2001; Palo Seco, 2005. Butte Co. Sucker Run Cr. near Forbestown, 2003. Contra Costa Co. Reliez Cr. at 3400 Springhill Rd., possibly from spring discharge, 2003-2004 ( Cressey and Sommers 2004); Chabot Regional Park, headwaters of San Leandro Cr., Site No. SLC-4 (Canyon School) and SLC-5 (Huckleberry Park), May 2000 ( Breaux et al. 2005); Marsh Cr., May 2011, and Wildcat Cr. at Big Springs, 2005-2006, A. Madrone and R. and L. Bottorf. El Dorado Co. Headwaters of North Cosumnes R., Singleton Springs, 20 Apr. 1982; North Cosumnes R. and tributary seeps at Sciaroni Crossing, 3 km north of Grizzly Flat, 1982 and 1986; 16 km east of Jenkinson Reservoir, Stump Spring, 24 Sep.1982; North Cosumnes R., spring tributary upstream of Meiss, 18 km east of Grizzly Flat, 18 June 1986; Harrel Fire Tank spring, tributary to Long Canyon, 5 km northeast of Grizzly Flat, Sep. 1986; Big Canyon Cr., 5 km east of Grizzly Flat, 4 Apr. 1987; south bank of North Cosumnes R., about 3 km west of Capps Crossing, 22 Apr.1987; Snow Cr., 13 km east of Jenkinson Reservoir, 27 Apr. 1987; Knickerbocker Cr. spring tributary, 1,600 m west of Hwy 49, 7 Feb. 1988; tributary to Knickerbocker Cr. near Cool, Mar. 2010 (all new county records of R. Bottorff). Glenn Co. Cold Cr. 1.3 mi. above confluence with Plasket Cr., 2003. Humboldt Co. Mason Gulch at Hwy 299 (upper Willow Cr.); Red Mountain Cr., Forest Service Rd. 10N12 (J. Lee, unpub. data); South Fork Eel R. above Briceland Bridge, 2004; Redwood Cr. 0.4 mi. above South Fork Eel R., 2004; Sholes Cr. 1.7 mi. above confluence with Mattole R., 2003; Squaw Cr. 0.3 mi. above Bull Cr., 2007. Lake Co. Rice Fork Cr. below Bear Cr. confluence, 2005, and Highland Cr., 2009. Lassen Co. Ash Cr., 2009. Los Angeles Co. Lower Santa Monica Canyon and Elizabeth Canyon, 2003. Marin Co. Bill Williams Cr., 5 km northwest of Corte Madera, Apr. 2000, R. Bottorff; Gerbode Valley, 2005. Mendocino Co. Angelo Coast Range Reserve headquarters, Sugar Cr. springbox and springhead drift, 2 fragments unidentifiable to species, C. Barr, 1 June 2003. Elder Cr., north of Branscomb, Nature Conservancy Reserve, 8 Oct.1984, R. Bottorff, E. Connors, and A. Knight; Mud Cr. 1 mi. above South Fork Eel R., 2003, North Fork of South Fork Noyo R. 0.2 mi. above confluence, 2005, and Redwood Cr. above Mill Cr., 2009. Modoc Co. Canyon Cr. at Hwy 71, 2005. Mono Co. Swauger Cr.; upper Owens R. at Big Springs, Inaya, and EBASCO site (SNARL database). Monterey Co. San Clemente Cr. 1.3 mi. above Black Rock Cr., 2005. Napa Co. Napa R.: Browns Valley Cr., Carneros Cr., Kimball Cr., Kreuse Cr., Pickle Cr., Ritchie Cr., Sarco Cr., Sulphur Cr., and York Cr., over 100 individuals in benthic samples collected from 2003 to 2006, by Friends of Napa River and Institute for Conservation Advocacy, Research & Education (R. Wisseman, unpub. data). Placer Co. Miners Ravine, 2004. Plumas Co. Grizzly Cr., near Walker Mine, 19 km east of Quincy, 26 Sep. 1992, K. Maier; Chips Cr., 2009. San Luis Obispo Co. Arroyo de la Cruz at Hwy 1, 2005, and Coon Cr. at Pecho Valley Rd., 2011. Santa Clara Co. Upper Stevens Cr., 2002, and Chestnut Picnic Area, 2002. Shasta Co. Bear Cr. Parkville Rd., 8.5 mi. south of Millville, 2003, and Brandy Cr. above South Shore Dr., 2005. Sierra Co. Yuba R. 0.9 mi. downstream of Indian Cr., 2001. Siskiyou Co. Fall Cr. (tributary to Klamath R.), 8 Oct. 2002, 2 specimens collected by CH 2M Hill Inc. in benthic samples above and below PacifiCorp’s bypass (R. Wisseman, unpub. data); Yreka Cr. above Interstate 5, 2007, and Scott R. above Etna Cr., 2006. Sonoma Co. Geyserville area, Blue Spring (CAS database); Big Sulphur Cr. 1.2 mi. above Geyser Canyon Cr., 2007, and Gilliam Cr., 2002. Stanislaus Co. Orestimba Cr. above Orestimba Rd., 2003. Trinity Co. unnamed, intermittent creek on Hwy 299, river mile mark 16.23 (J. Lee, unpub. data); Grassy Flat Cr. 0.2 mi. upstream of Hayfork Cr. Ventura Co. Lion Canyon, Tule Cr., and Piru Cr., 2003. Yolo Co. Cache Cr., 2009.