Invasion

Invasion Description

1st Record: Oakland/CA/San Francisco Bay (1904, Chapman 1988; USNM 235021, United States National Museum of Natural History 2007)

Geographic Extent

Oakland/CA/San Francisco Bay (1904, Chapman 1988; USNM 235021, United States National Museum of Natural History 2007); San Mateo Point/CA/San Francisco Bay (1912, Chapman 1988; CA/Elkhorn Slough (1985,Wasson et al. 2001); CA/San Pablo Bay (1942, Chapman 1988, from buoy); Napa Valley Fishing Resort, Vallejo/CA/Napa River (1976, Chapman 1988; USNM 235022, United States National Museum of Natural History 2015); Presidio Yacht Club, San Francisco/CA/Golden Gate (2004, Cohen et al. 2005); cargo ship 'Florikan'/CA/Suisun Bay (Llanso et al. 2011); Collinsville/CA/Sacramento River (1977, Cohen and Carlton 1995); San Mateo Point/CA/South San Francisco Bay (1988, USNM 235025, United States National Museum of Natural History 2015)