Invasion

Invasion Description

1st record: CA/San Francisco Bay (1936, Hartman 1947; Carlton 1979)

Geographic Extent

Marin County/CA/Bolinas Lagoon (1969, as H. cf. filiformis, Light 1969, cited by Carlton 1979); CA/San Francisco Bay (1936, Hartman 1947, cited by Carlton 1979); CA/San Pablo Bay (1951, CAS-IZ 5196.00, California Academy of Sciences 2015, 38°1'N, 122°19'W); CA/San Pablo Bay (Nichols and Thompson 1985a; Cohen and Carlton 1995); Rodeo Marina/CA/San Pablo Bay (Cohen et al. 2005); ; Pittsburg/CA/Suisun Bay (Cohen and Carlton 1995, Hopkins 1986); CA/Suisun Bay (1973, CAS-IZ 124749.00, Hopkins 1986, California Academy of Sciences 2015, 37°28'N, 122°6'W); CA/Grizzly Bay (1977-2003, Hopkins 1986; Peterson and Vayssieres 2010); Sherman Island/CA/Sacramento-San Joaquin Delta (Hopkins 1986); Oakland/CA/Oakland Inner Harbor (1973, CAS-IZ 8154.00, California Academy of Sciences 2015, 37°47'46"N, 122°19'4"W); CA/South San Francisco Bay (Cohen and Carlton 1995; Nichols and Thompson 1985b); CA/Elkhorn Slough (Nybakken 1977, cited by Wasson et al. 2001); CA/Morro Bay (1960, Reish and Barnard 1967, cited by Carlton 1979)