Invasion

Invasion Description

1st Record: Westerly/RI/Block Island Sound (1897, USNM 435401, 663931, U.S. National Museum of Natural History 2007);

Geographic Extent

Watch Hill/RI/Pohley 1976; Westerly/RI/Block Island Sound (1897, USNM 435401, 663931, U.S. National Museum of Natural History 2007); ; Point Judith/RI/Block Island Sound (Paul Fofonoff, personal observations); Block Island/RI/Block Island Sound (MCZ 174570, Musuem of Comparative Zoology 2008)