''Orconectes inermis'', the Northern cave crayfish, is a

troglomorphic Troglomorphism is the morphological adaptation of an animal to living in the constant darkness of caves, characterised by features such as loss of pigment, reduced eyesight or blindness, and frequently with attenuated bodies or appendages. The ter ...

freshwater crayfish Crayfish are freshwater crustaceans belonging to the infraorder Astacidea, which also contains lobsters. Taxonomically, they are members of the Superfamily (taxonomy), superfamilies Astacoidea and Parastacoidea. They breathe through feather- ...

native to

Kentucky Kentucky (, ), officially the Commonwealth of Kentucky, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Illinois, Indiana, and Ohio to the north, West Virginia to the ...

and

Indiana Indiana ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Michigan to the northwest, Michigan to the north and northeast, Ohio to the east, the Ohio River and Kentucky to the s ...

in the United States. There are two sub-species described; *'' Orconectes inermis inermis'', known as ghost grayfish *'' Orconectes inermis testii'' (Hay, 1891), known as unarmed crayfish The two sub-species are known to form intergrades in the range where they overlap.

References

Further reading