Invasion

Invasion Description

1st Record: Coast Guard Dock, Coos Bay/OR/Coos Bay (1986, Chapman 1988);

Geographic Extent

Toledo/OR/Yaquina Bay (1987, Chapman 1988; USNM 235019, United States National Museum of Natural History 2007, on floats); Coast Guard Dock, Coos Bay/OR/Coos Bay (1986, Chapman 1988); (OR/upper Coos Bay (Carlton 1989; Wonham and Carlton 2005); CA/Hookton Slough, South Humboldt Bay (2000, Boyd et al. 2002, as I. nipponensis (2000, Boyd et al. 2007)