Formerly widespread in the Kansas River basin and eastern portion of western tributary basins, known only from larger creeks and rivers, now absent in western tributary basins along with smaller tributaries and western portions of Kansas basin.*
Below is a specimen of a female Pistolgrip.
* Comments on Kansas River species provided by Steve Cringan, based in part on observations in: Angelo, R.T., M.S.Cringan, E.Hays, C.A.Goodrich, E.J.Miller, M.A.VanScoyoc, B.R.Simmons. 2009. Historical Changes in the Occurrence and Distribution of Freshwater Mussels in Kansas, Great Plains Research 19(1):89-126.
Data courtesy of Kansas Department of Health and Environment (KDHE). We would like to thank Steve Cringan and Clint Goodrich for their assistance.
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