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This amphipod species is found in freshwater drainages throughout North America. It is a native of the Mississippi River and its drainages, as well as most river systems in the Atlantic River Plain, including the Delaware, Hudson and Chesapeake. It also occurs throughout the Great Lakes of the United States and their drainages, although it is unclear if it is native to these areas. These amphipods are also found throughout drainages in northeastern Canada (St. Lawrence River and its drainages and gulf), as far north as Prince Edward Island. Recently there have been reports of this species from the United Kingdom and Finland, where they were likely introduced via shipping.

Biogeographic Regions: nearctic (Native ); palearctic (Introduced )


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Source: Animal Diversity Web

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