Invasion

Invasion Description

!st Record: below Trenton/NJ/Delaware River (1871, Abbott 1877).

Geographic Extent

below Trenton/NJ/Delaware River (1871, Abbott 1877); Trenton-Philadelphia-Wilmington/NJ-PA-DE/Delaware River (Horwitz 1986); Raasch and Altemis 1991; Raasch 19916); DE/Chesapeake and Delaware Canal (Pfitzenmeyer et al. 1980; DE/Appoqunimink Creek (Smith 1971); NJ/Alloway Creek (Smith 1971)