Invasion

Invasion Description

1st Record: CA/Tomales Bay (Bonnot 1935, Hedgepeth 1952, cited by Carlton 1979). These may have been dead shells imported with Atlantic Oysters (Carlton 1979)

Geographic Extent

CA/Tomales Bay (Bonnot 1935, Hedgepeth 1952, cited by Carlton 1979). These may have been dead shells imported with Atlantic Oysters (Carlton 1979); San Mateo County: off San Francisco airport/CA/South San Francisco Bay (2/14/1973, CAS-IZ 125073.00, California Academy of Sciences 2013); Alameda County:off Coyote Hills Slough/CA/South San Francisco Bay (8/21/1973, CAS-IZ 125562.00, California Academy of Sciences 2013); Coyote Point/CA/South San Francisco Bay (Foss 2009, 3 specimens)