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Lithasia verrucosa (Rafinesque 1820) |
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Ohio River, Ft. Massac, Massac County, Illinois 6/27/2012. The largest specimen measures 23.3 mm. |
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Lithasia verrucosa (Rafinesque 1820) |
|
|
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Ohio River, Ft. Massac, Massac County, Illinois 6/27/2012. The largest specimen measures 23.3 mm. |
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