The Tumbling Creek cavesnail is a species of freshwater cave snail with gills and an operculum, an aquatic gastropod mollusk in the family Amnicolidae.
Allocrangonyx is a genus of troglobitic amphipod crustaceans from the South Central United States. The two species are both listed as vulnerable on the IUCN Red List. The animals are blind and unpigmented. During the male's development, the outer ramus of the third uropod differentiates into secondary segments and grows to a length greater than the animal's body length.
Caecidotea barri, commonly known as the Clifton Cave isopod, is a species of crustacean in the family Asellidae. It is endemic to Kentucky in the United States.
Caecidotea is a genus of crustaceans in the family Asellidae. It contains the following species:
Caecidotea nickajackensis is a species of isopod crustacean in the family Asellidae. It was believed to be endemic to a single cave in Tennessee, and was thought to have been exterminated when that cave was flooded in 1967 by the building of the Nickajack Dam, however, in 2013 the species was discovered within Horseskull Cave and Raccoon Mountain Caverns.
Crangonyx is a genus of crustacean in family Crangonyctidae. Crangonyx species can live in marshes, savannas or swamps as well as caves. It contains the following species:
Echinodillo is a genus of woodlice in the family Armadillidae. It contains two species.
Lirceus culveri, the Rye Cove cave isopod, is a species of isopod in the family Asellidae. It is endemic to McDavids Cave in Scott County, Virginia in the United States.
Lirceus usdagalun is a rare species of crustacean known by the common name Lee County cave isopod. It is endemic to Virginia in the United States, where it is known from a single network of karst cave systems in Lee County. It is threatened by a number of processes. It is a federally listed endangered species of the United States, and is assessed as "endangered" by the International Union for Conservation of Nature.
Mexilana saluposi is a species of crustacean in the family Cirolanidae, the only species in the genus Mexilana. It is endemic to Mexico.
Mexistenasellus is a genus of isopod crustaceans in the family Stenasellidae.
Monolistra is a genus of isopod crustaceans in the family Sphaeromatidae. Its members are restricted to countries of the former Yugoslavia, Italy and Switzerland. It contains the following subgenera and species, four of which are listed as vulnerable (VU) or endangered (EN) on the IUCN Red List:
Onchotelson is a genus of isopod crustaceans in the family Phreatoicidae, which is endemic to Tasmania. It contains two species, both of which are listed as vulnerable on the IUCN Red List:
Proasellus is a genus of isopod crustaceans in the family Asellidae. Two of its species, P. parvulus and P. slovenicus, are Slovenian endemics which are listed as vulnerable species on the IUCN Red List.
Speocirolana thermydronis is a species of crustacean in the family Cirolanidae. It is endemic to Mexico and only known from springs near Cuatro Ciénegas, Coahuila. Its habitat is threatened by irrigation.
Sphaerolana is a genus of isopod crustaceans in the family Cirolanidae, all of which are endemic to Mexico.
Stygobromus is a genus of amphipod crustaceans that live in subterranean habitats. The majority of the listed species are endemic to North America, a smaller number of species are also known from Eurasia. Most of the North American species live in areas which were not covered by the Laurentide Ice Sheet, although a few species seem to have survived under the ice. A number of species are on the IUCN Red List as endangered species (EN) or vulnerable species (VU); one species, S. lucifugus, is extinct.
Thermosphaeroma is a genus of crustacean in family Sphaeromatidae. They occur exclusively in hot springs of southwestern United States and central Mexico.
The Asellidae are a family of isopod crustaceans, one of the largest families of freshwater isopods, living in both epigean and hypogean habitats in North America and Europe.
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