Wikipedia
Antrolana
Antrolana lira is a species of crustacean in family Cirolanidae, the only species in the genus Antrolana. It is an unpigmented troglobite with no eyes, reaching a maximum length of .
A. lira is endemic to the Great Appalachian Valley in Virginia and West Virginia, where it "swims freely through calcite-saturated waters of deep karst aquifers". Its range extends over , from Lexington, Virginia to Charles Town, West Virginia.
Antrolana lira is listed as a vulnerable species on the IUCN Red List, and as a threatened species under the United States Endangered Species Act.