Invasion

Invasion Description

1st Record: NY/Hudson River estuary? Watershed? (1855, Daniels et al. 2005)

Possibly introduced (Smith and Lake 1990); not included in Mills et al. (1997), present in upper watershed in 1936 survey

Geographic Extent

south of Montrose Point/Hudson River, Haverstraw Bay (1967, I-26477, American Museum of Natural History 2014); South End Cruger Island/NY/Hudson River (1972, I-32582, American Museum of Natural History 2014); Bard College/NY/Hudson River, mouth of Sawkill River (1972, I-35796, American Museum of Natural History 2014); Staen Island/NY/Arthur Kill (1974, 1975, Briggs and Waldman 2002, mpinged on the intake screen of a power plant)