Invasion

Invasion Description

1st Record: Manitou Beach, Kitsap County/WA/Puget Sound (1936; Burch 1943, cited by Carlton 1979)

Geographic Extent

Manitou Beach, Kitsap County/WA/Puget Sound (1936; Burch 1943, cited by Carlton 1979); Whidbey Island/Puget Sound (Burch and Eyerdam 1943, cited by Carlton 1979); WA/Hood Canal (1959, Carlton 1979); Edmonds/CA/Puget Sound (Carlton 1979)