The pimpleback is found throughout the Mississippi drainage through mid-Michigan and into Lake Erie. Its range extends from central New York west to southeastern North Dakota, south to eastern Texas and east through northern Mississippi.
In Michigan this species is found in the Grand and Saginaw drainages and in rivers in southern Michigan's lower peninsula. It has also been recorded from Saginaw Bay.
Biogeographic Regions: nearctic (Native )
- Burch, J. 1975. Freshwater unionacean clams (Mollusca: Pelecypoda) of North America. Hamburg, Michigan: Malacological Publications.
- Oesch, R. 1984. Missouri naiades, a guide to the mussels of Missouri. Jefferson City, Missouri: Missouri Department of Conservation.
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