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Cambarus in River Styx

By Geology and Ecology of National Parks
A crayfish with one pincer (cheliped) that is much larger than the other
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Detailed Description

The crayfish Cambarus tenebrosus. Cave-limited crayfish exist, though this is not one of them; this species is occasionally found on the surface and is a troglophile. Photo courtesy of Kendall Wheeler; photographer Rick Olson/NPS.

Sources/Usage

Photo courtesy of Kendall Wheeler; photographer Rick Olson/NPS