ANISOGAMMARIDAE Bousfield, 1977

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 : 3-4

ANISOGAMMARIDAE Bousfield, 1977

Anisogammarus pugettensis (Dana, 1853) (euryhaline)

Records: Humboldt Co. Fay Slough at Old Arcata Rd. , 6 specimens, 12 Aug. 1993, D.C. Rogers .

Comments: Reported from low-salinity marshes and estuaries in California and farther north ( Chapman 2007), and partially anoxic waters ( Waldichuck and Bousfield 1962).

Eogammarus confervicolus (Stimpson, 1856) (euryhaline)

Records: Contra Costa, Sacramento, and Solano Co’s. Suisun Bay, 2002, 1 specimen, and Sacramento R. above Point Sacramento, 2002 and 2004, 1 to 5 specimens, all from ponar dredge, CDWR; Pinole Cr. at Senior Center, 5 specimens (identified only to genus) 23 Apr 2003, S. Cressey. Humboldt Co. Eel R. at Rio Dell, 3 specimens, 12 Aug. 1993, D.C. Rogers. Los Angeles Co. Malibu Lagoon, Jan. and Feb. 1984, D. Galli ( Tomikawa et al. 2006). Marin Co. Kay’s Creek (Cr.) at Highway (Hwy) 1, 28 specimens, 16 July 2006, D.C. Rogers; Millerton Gulch at Hwy 1, 21 specimens, May 2004, D.C. Rogers. Mendocino Co. Navarro R. at Hwy 128, 6 specimens, 21 June 2001, D.C. Rogers; Ten Mile R. at Camp 2 Rd., 6 specimens, 14 June 1997, D.C. Rogers. Monterey Co. Elkhorn Slough ( MacGinitie 1935); Salinas R. estuary ( Smith 1953); Big Sur R. at Hwy 1, 11 specimens, 5 June 1997, D.C. Rogers. San Luis Obispo Co. Coon Cr., 17 specimens, 4 Apr. 2005, D.C. Rogers. Cuesta by the Sea, Sweet Springs, 9 specimens, 6 June 1997, D.C. Rogers; Pecho Cr., 1 specimen, 21 Mar. 2008, D.C. Rogers; and marsh near Guadalupe, 35 specimens (identified only to genus), 18 Sep. 1995, E. Bastin. Solano Co. Montezuma Sough near Montezuma, 4 specimens, 23 Aug. 1999, D.C. Rogers; Napa R. at Hwy 121, Napa, 13 specimens, 17 May 2004, D.C. Rogers. Sonoma Co. Petaluma R. at Petaluma, 2 specimens, 9 Sep. 1997, D.C. Rogers; Russian R. at Greenwood Park, 2 specimens, 21 Sep. 2008, D.C. Rogers.

Comments: This euryhaline species ranges from Los Angeles to Alaska ( Carl 1937; Bousfield 1958; Rogers 2005; Tomikawa et al. 2006).

Ramellogammarus californicus Bousfield and Morino, 1992 (stenohaline?)

Records: Known only from the type locality in Humboldt Co., McKinleyville: “stream at Murray Rd. at McKinley Junction,” 1960, B. Neal ( Bousfield and Morino 1992) .

Ramellogammarus columbianus Bousfield and Morino, 1992 (hyporheic?)

Records: Mendocino Co. Ten Mile R. at Camp 2 Rd., 2 specimens, 14 June 1997, D.C. Rogers .

Comments: A freshwater species found in the benthos of rivers flowing into protected coastal bays from Oregon to Queen Charlotte Islands ( Bousfield and Morino 1992; Chapman 2007).

Ramellogammarus ramellus ( Weckel, 1907) (stenohaline?)

Records: Mendocino Co. Point Arena ( Weckel 1907); “ stream mouth at [Albion] Biological Station, Mendocino, author coll., 1955 ” ( Bousfield 1958); Irish Gulch Cr. below Hwy 1, 2004-2005, and 1.5 miles (mi.) upstream of ocean in seep, 2006 ( Bottorff and Bottorff 2007). Santa Clara Co. San Francisquito Cr., 1 specimen, 29 Oct. 2010, G.O. Graening.

Comments: R. ramellus is reported only from California ( Bousfield and Morino 1992; this study), but the ramellus species group, which consists of R. ramellus , R. californicus , R. similimanus (Bousfield 1961) and R. campestris Bousfield and Morino, 1992 , ranges from northern California to northern Oregon.