Invasion

Invasion Description

1st Record: Swann's Point/VA/James River (1990, Chesapeake Bay Program 1998)

Geographic Extent

VA/York River (Gillett and Schaffner 2009); Swann's Point/VA/James River (Chesapeake Bay Program 2001); VA/Pamunkey River (1990, Chesapeake Bay Program 2001); Penknife Point/MD/Nanticoke River (1990, Chesapeake Bay Program 2001); Route 301 Bridge/MD/Potomac River (1990.Chesapeake Bay Program 2001); VA/York River (Gillett and Schaffner 2009)