Invasion

Invasion Description

1st Record: CA/San Francisco Bay (1980, Cohen and Carlton 1995, as Aspidelectra sp., cryptogenic; Carlton 2008, personal communication, introduced)

Geographic Extent

CA/San Francisco Bay (1979, Cohen and Carlton 1995, as Aspidelectra sp., cryptogenic; Carlton 2008, personal communication, introduced); Dumbarton Railway Bridge/CA/South San Francisco Bay (2000, Ruiz et al., unpublished data)