Hyalella sp. Smith, 1874

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 : 17-19

Hyalella sp. Smith, 1874

Records: The following records are summarized from Bate 1862, Stebbing 1906, Weckel 1907, Smith 1953, Frantz and Cordone 1966, Eriksen 1968, McElray and Resh 1991, Toft 2000, Lee 2001, Bottorff et al. 2003, Cressey and Sommers 2004, Breaux et al. 2005, Lee and Cooprider 2005, Witt et al. 2006, Johnson 2008, CAS database, CDWR database, NMNH database, ABL database, and this study. Alameda Co. South Bay Aqueduct, Arroyo Las Positas, Berkeley Beach, Altamont Pass, Arroyo Mocho. Alpine Co. Bagley Valley Cr., Heenan Cr., Company Meadow, Poison Cr., Silver King Cr. Amador Co. Lower Cosumnes R.; Big Indian Cr. 4 mi. north of Plymouth. Butte Co. Cherokee Canal, Clear Cr., Gold Run Cr., Little Chico Cr. Calaveras Co. Coyote Cr. at Natural Bridges. Contra Costa Co. Alameda Cr., Alhambra Cr., west Antioch Cr., Botanic Garden, Clifton Court Forebay, Contra Costa Canal, Donnor Cr., Franklin Cr., Grayson Cr., Jewel Lake, Kirker Cr., Mallory Cr., Mitchell, Old R., Peacock in Irish Canyon, Periera Cr., Pinole Cr., Possum Picnic Area, Refugio Cr., Rodeo Cr., Sacramento R., San Joaquin R., San Pablo Cr., Simas Cr., Tice Cr., Walnut Cr., Wildcat Cr., unnamed cr. above Bear Creek Rd. Del Norte Co. Smith R. El Dorado Co. Lake Tahoe, Meeks Cr., Cosumnes R. (lower and middle reaches), Francis Lake near Loon Lake, Grass Lake, Acorn Cr. in Skunk Canyon. Fresno Co. Sycamore Cr. Glenn Co. Mud Cr., Stony Cr. Humboldt Co. Salmon Cr. Imperial Co. Holtville Drain. Inyo Co. Bishop Cr., Darwin Cr. Kern Co. Kern R., Stine Canal. Lake Co. Big Canyon Cr., Seigler Cr. Lassen Co. Ash Cr., Goodrich Cr., Willow Cr., Beaver Cr., Horse Cr., Parsnip Cr. Los Angeles Co. Ballona Cr., Big Tujunga Canyon, Castaic Cr., Cheeseboro Canyon, Corral Canyon Cr., Lachusa Cr., Las Virgenes Cr., Little Rock Cr., Los Angeles R., Malibu Cr., Medea Cr., Puerco Canyon Cr., Piru Cr., Rio Hondo, Rustic Canyon, Santa Monica canyon, Sweetwater Canyon Cr., Topanga Canyon Cr., Trancas Canyon Cr., Triunfo Canyon, Tuna Canyon Cr., Zuma Canyon. Madera Co. Fresno R., San Joaquin R. Marin Co. Chileno Valley, Gambonini Mine, Gerbode, Glenbrook Cr., Green Gulch, Home Ranch Cr., Keys Cr., Laguna Lake, Muddy Hollow Cr., Rolland Pond, Schooner Cr., Soulajule, Stemple Cr., Tennessee Valley, Verde Canyon, Walker Canyon, Walker Cr., spring on Old Springs Trail. Mariposa Co. Chowchilla R., Mariposa Cr. Mendocino Co. Navarro R., Outlet Cr., Tomki Cr. Merced Co. Colony Main Canal, Merced R., Salt Slough. Modoc Co. East Cr., Egg Lake Slough, Loma Alta Cr., Ash Cr., Fitzhugh Cr., Pit R., Turner Cr., Rattlesnake Cr., Willow Cr., Witcher Cr. Mono Co. A thermal spring near Bridgeport, East Walker R., Hot Cr., Kirman Cr., Little Walker R., Mammoth Cr., Owens R., Paramount Cr., Robinson Cr., Swauger Cr. Monterey Co. Alisal Cr., Arroyo Seco, Carmel R., Gabilan Cr., San Antonio Cr., San Jose Cr., Salinas R. estuary. Napa Co. Napa R.. Nevada Co. Boca Spring, middle Truckee R., Paradise Lake, Prosser Cr. Orange Co. Arroyo Trabuco Cr., Brea Canyon, Fullerton Cr., Laguna Canyon, San Gabriel R., San Juan Cr., Segunda Deshecha Canada, Tanner Cr., Telegraph Canyon. Placer Co. Auburn Ravine, Kaseberg Cr., Lake Tahoe, Linda Cr., Martis Cr., Miners Ravine Pleasant Grove Cr., salt springs in Lincoln, Secret Ravine, Truckee R.. Plumas Co. Corral Spring, Cow Cr., Desmona Cr., Fairy Spring, Freeman Cr., Grizzly Cr., Indian Cr., Jenkins Cr., Lake Davis, Last Chance Cr., Little Stony Cr., Moselia Spring, Old House Cr., Red Clover Cr., Spanish Cr. Riverside Co. Adobe Cr., Coachella Valley storm channel, Murrieta Cr., Salt Cr., Salton Sea Drain, Sandia Cr., Santa Ana R., Temecula Cr., Whitewater R.. Sacramento Co. Alder Cr., American R., Arcade Cr., lower Cosumnes R., Dry Cr., Elder Cr., Elk Grove Cr., Laguna Cr., Morrison Cr., Sacramento R.. San Benito Co. Chalone Cr., Sandy Cr. San Bernardino Co. Aliso Canyon Cr., Big Bear Lake, Mojave R., Water Canyon Cr. San Diego Co. Agua Hedionda Cr., Alvarado Cr., Black Mountain Cr., Boden Canyon Cr., Boulder Cr., Buena Vista Cr., Campo Cr., Carlsbad, Cedar Cr., Chicarita Cr., Chollas Cr., Conejos Cr., Cottonwood Cr., De Luz Cr., Devils Canyon Cr., Encinitas Cr., Escondido Cr., Forrester Cr., French Cr., Fry Cr., Gird Cr., Gopher Canyon, Green Valley Cr., Irons Springs, Jamul Cr., Keys Cr., Kit Carson Cr., La Posta Cr., Lawson Valley, Loma Alta Cr., Long Canyon Cr., Los Penasquitos Cr., Cottonwood Cr., Moosa Cr., Pauma Cr., Pine Cr., Rainbow Cr., Rattlesnake Cr., Rose Canyon Cr., San Diego R., San Luis Rey R., San Marcos Cr., San Mateo Cr., San Vicente Cr., Soledad Canyon Cr., Sweetwater R., Tecolote Cr., Troy Canyon Cr., Santa Ysabel Cr., Wilson Cr. San Francisco Co. Lake Merced, Lobos Cr. San Joaquin Co. Bear Cr., Calaveras R., Duck Cr., French Camp Slough, Little John Cr., Mormon Slough, Old R., Port of Stockton, San Joaquin R.. San Luis Obispo Co. San Luis Obispo, Arroyo Grande Cr., Brizzolara Cr., Camp Roberts, Cholame Cr., Chorro Cr., Chumash Cr., Coon Cr., Cuyama R., Dairy Cr., Garden Cr., Huasna R., Laguna Lake, Las Tablas Cr., Los Osos Cr., Nacimiento R., Orcutt Cr., Oso Flaco Lake, Pismo Cr., Salinas R., San Luis Obispo Cr., San Simeon Cr., Santa Rosa Cr., Stenner Cr., Toro Cr., Warden Cr. San Mateo Co. Above Mud Dam, Gazos Cr. Lagoon, Honsinger, Jones Gulch, San Francisquito Cr. Santa Barbara Co. Arroyo Burro, Atascadero Cr., Canada de la Gaviota, Jalama Cr., La Brea Cr., Santa Margarita R., Santa Maria R., Santa Ynez R., Shuman Cr., Sisquoc R., Zaca Cr., Zanja de Cota Cr. Santa Clara Co. Alamitos Cr., Alviso Slough, Arroyo Hondo, Guadalupe Cr., Lake Lagunita, Llagas Cr., Los Gatos Cr., Matadero Cr., Pacheco Cr., Pajaro R., Penitencia Cr., Saratoga, San Francisquito Cr. Santa Cruz Co. Baldwin Cr., Lombardi Cr., Sandy Flat Cr., Waddell Cr., Wilder Cr. Shasta Co. Acid Canal. Sierra Co. Cold Cr., unnamed spring in Sardine Valley. Siskiyou Co. Boles Cr., Butte Cr., Evans Ditch, Johns Meadow Cr., Klamath R., Oregon Slough, Shasta R., Yreka Cr. Solano Co. Alamo Cr., Chabot Lake, Putah South Canal, Sacramento R., Sweany Cr., Ulatis Cr. Sonoma Co. Fairfield Osborn Preserve, Ellis, Lynch, Maacama Cr., Mark West Cr., Matanzas Cr., Russian R., Stemple Cr., Wallace Cr., Wine Cr. Stanislaus Co. Del Puerto Cr., Lateral Canal, Orestimba Cr., Stanislaus R., Tuolumne R.. Sutter Co. Feather R., Wadsworth Canal. Tehama Co. Antelope Cr., Big Dry Cr., Deer Cr., Duck Cr., Dye Cr., New Cr., Toomes Cr. Trinity Co. Hayfork Cr., Miner's Cr., Potato Cr. Tulare Co. Campbell-Moreland Ditch, Tule R., Yucca Cr. Ventura Co. Arroyo Conejo Cr., Arroyo Las Posas, Arroyo Simi, Beardsley Wash, Calleguas Cr., Conejo Cr., Las Virgenes Canyon, Lindero Canyon, Lockwood Cr., Mugu Drain, Padre Juan Canyon Cr., Piru Cr., Revolon Slough, Rincon Cr., Santa Clara R., Sespe Cr., Ventura R.. Yolo Co. Cache Cr., Sacramento Turning Basin, Willow Slough, Yolo Central Canal. Yuba Co. Cordua Canal, Honcut Cr., Jack Slough, Stahl Ditch.

Comments: The nomen Hyalella azteca (de Saussure 1858) has been broadly applied to members of the genus Hyalella for decades. However, Gonzales and Watling (2002a) demonstrated that H. azteca is probably limited to the region of Veracruz, México (the type locality). Various studies have demonstrated that the form typically referred to as H. azteca represents a polyphyletic complex that has been assigned unsystematically to populations throughout North and South America ( Bousfield 1958; Gonzalez and Watling 2002a [and numerous studies cited within],b; Wellborn et al. 2005). This genus is nearly cosmopolitan in California, uncommon only in desert areas and above 600 m elevation ( Figure 5). Chapman (2007) also reports that there are likely many introductions into novel estuarine habitats. Until the systematics and meristics are resolved, none of the California records are confidently assigned to any species.

Hyalella muerta Baldinger et al., 2000 , Death Valley Amphipod (phreatobiont)

Records & Comments: Known only from Inyo County, Death Valley National Park, in Texas Springs and Travertine Springs ( Baldinger et al. 2000; Witt et al. 2006).

Hyalella sandra sensu lato Baldinger et al., 2000 (phreatobiont)

Records & Comments: Known only from Inyo County, in Nevares Springs and Travertine Springs ( Baldinger et al. 2000). Witt et al. (2006) concluded that the populations in these two springs are different species.