''Cambarus setosus'', the bristly cave crayfish, is a freshwater

crayfish Crayfish are freshwater crustaceans belonging to the infraorder Astacidea, which also contains lobsters. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some spe ...

native to

Missouri Missouri (''see #Etymology and pronunciation, pronunciation'') is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Ranking List of U.S. states and territories by area, 21st in land area, it border ...

and

Arkansas Arkansas ( ) is a landlocked state in the West South Central region of the Southern United States. It borders Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, Texas to the southwest, and Oklahoma ...

in the United States. It is a cave-dwelling species known from 164 localities with the majority on the Springfield Plateau in southwestern Missouri.

References

Cambaridae Cave crayfish Freshwater crustaceans of North America Crustaceans described in 1889 Taxa named by Walter Faxon {{crayfish-stub