Orconectes pellucidus
Orconectes pellucidus, the Mammoth Cave crayfish, is a freshwater crayfish native to karst landscapes in Kentucky and Tennessee in the United States.
The common name refers to the Mammoth [Cave National Park], however it also occurs outside of the park. An alternative common name, the eyeless crayfish refers to its troglomorphic adaptions to its subterranean habitat.