Invasion

Invasion Description

1st Record: Probably present by 1875-1880, based on surrounding records.

Geographic Extent

Trenton/ME/Blue Hill Bay (1971, MCZ 343657, Museum of Comparative Zoology 2007); Blue Hill/MESalt Pond (MCZ 256592, Museum of Comparative Zoology 2008); Trenton, NE of Trenton Bridge, in mudflats/ME/Eastern Bay (MCZ 343651, Museum of Comparative Zoology 2008); Trenton, east side of Thompson Island, just south of Trenton bridge/ME/Blue Hill Bay (MCZ 343665, Museum of Comparative Zoology 2008); Bass Harbor, State Ferry Pier/ME/Gulf of Maine (MCZ 343654, Museum of Comparative Zoology 2008); Swans Island, Fir Point, state ferry pier/ME/Frenchman's Bay (MCZ 343658, Museum of Comparative Zoology); Somesville, E side, N of Rt. 198 near X with Rt 102/ME/Somes Harbor (MCZ 343887, Museum of Comparative Zoology 2008)