Invasion

Invasion Description

1st record: Urbana/VA/Rapahannock River (1962, USNM 108411, U.S. National Museum of Natural History 2016)

Geographic Extent

Urbana/VA/Rapahannock River (1962, USNM 108411, U.S. National Museum of Natural History 2016); [Washington/DC/Potomac River, Banta 1966, on a species list, but no documentation ]