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Pseudothelphusidae is a family of freshwater crabs found chiefly in mountain streams in the Neotropics. They are believed to have originated in the Greater Antilles and then crossed to Central America via a Pliocene land bridge.
Disparithelphusa pecki is a species of freshwater crab in the family Pseudothelphusidae, and the only species in the genus Disparithelphusa.
Smalleyus is a genus of crabs in the family Pseudothelphusidae, containing the single species Smalleyus tricristatus.
Kingsleya is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Fredius is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Brasiliothelphusa tapajoensis is a species of freshwater crabs in the family Pseudothelphusidae, and the only species in the genus Brasiliothelphusa. It was described in 1986 from specimens caught in the Rio Tapajós in the state of Pará, Brazil. It is listed as Data Deficient on the IUCN Red List.
Neoepilobocera gertraudae is a species of cave-dwelling crab from Cuba.
Achlidon agrestis is a species of crab in the family Pseudothelphusidae, and the only species in the genus Achlidon. It lives in rivers in Mexico and Costa Rica.
Eudaniela is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Lobithelphusa mexicana is a species of crab in the family Pseudothelphusidae, the only species in the genus Lobithelphusa.
Martiana clausa is a species of crab in the family Pseudothelphusidae, the only species in the genus Martiana.
Oedothelphusa is a genus of crabs in the family Pseudothelphusidae, containing the single species Oedothelphusa orientalis. It is known from a single site at an altitude of 1,210 metres (3,970 ft) in Monagas state, Venezuela.
Phallangothelphusa is a genus of crabs in the family Pseudothelphusidae. It contains five described species:
Phrygiopilus is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Rodriguezus is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Strengeriana is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Tehuana is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Typhlopseudothelphusa is a genus of troglobitic crabs in the family Pseudothelphusidae, containing the following species:
Villalobosius is a genus of crabs in the family Pseudothelphusidae, containing a single species, Villalobosius lopezformenti. It lives in the northern part of the state of Oaxaca, Mexico, on the Isthmus of Tehuantepec, and is adapted to a troglobitic lifestyle.
Around 1,300 species of freshwater crabs are distributed throughout the tropics and subtropics, divided among eight families. They show direct development and maternal care of a small number of offspring, in contrast to marine crabs, which release thousands of planktonic larvae. This limits the dispersal abilities of freshwater crabs, so they tend to be endemic to small areas. As a result, a large proportion are threatened with extinction.
References
- ↑ Magalhaes, C.; Lara, L. R. & Wehrtmann, I. S. (2010). "A new species of freshwater crab of the genus Allacanthos Smalley, 1964 (Crustacea, Decapoda, Pseudothelphusidae) from southern Costa Rica, Central America" (PDF). Zootaxa . 2604: 52–60.
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