Invasion

Invasion Description

1st Record: near locks, near Museum of Science, Boston/MA/Charles River (1995, Smith and Boss 1995)

Geographic Extent

near locks, near Museum of Science, Boston/MA/Charles River (1995, Smith and Boss 1995); north side on buoy at MIT boatdock, 200 m upstream from Massachuestts Ave., Cambridge/MA/Charles River (5/28/2008, MCZ Malacology 362351, Museum of Comparative Zoology 2012, 42° 21´ 18.43´´ N 71° 5´ 50.9´´ W)