Invasion

Invasion Description

1st Record: Point Richmond/CA/San Francisco Bay (1953, Kornicker 1975; Carlton 1979);

Geographic Extent

Vallejo Marine Teminal Site/CA/Mare Island Strait (2014; Applied Marine Sciences 2014, 38.081778N, -122.246817W); Point Richmond/CA/San Francisco Bay (1953, Kornicker 1975; Carlton 1979); CA/San Francisco Bay ("widely distributed") (Cohen and Carlton 1995); CA/San Pablo Bay (1977, USNM 157771, USNM 57772, US National Museum of Natural History 2008; 1987-2003, Peterson and Vayssieres 2010, abundant in dry years)