Cambarus tenebrosus
Cambarus tenebrosus, the cavespring crayfish, is a freshwater crayfish native to Alabama, Kentucky, Tennessee, Ohio and Indiana in the United States. It is a facultative cave-dwelling species known from 84 caves over its range and 20 surface locations in the Cumberland Plateau. References Cambaridae Cave crayfish Freshwater crustaceans of North America Crustaceans described in 1902