Procambarus is a genus of crayfish in the family Cambaridae, all native to North and Central America. It includes a number of troglobitic species, and the marbled crayfish (marmorkrebs), which is parthenogenetic. Originally described as a subgenus for four species, it now contains around 161 species.
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. Some species of this family are troglobitic.
Potamon is a genus of freshwater or semiterrestrial crabs mainly found from Southern Europe through the Middle East, and as far east as north-western India. The only exception is the North African P. algeriense, which also is the only potamid of mainland Africa. Twenty species are currently recognised. These crabs are omnivores that have a broad ecological tolerance. The adult Potaman reach up to 50 mm in size during their 10-12 year life span.
Macrobrachium is a genus of freshwater prawns or shrimps characterised by the extreme enlargement of the second pair of pereiopods, at least in the male.
Neostrengeria is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Odontothelphusa is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Potamocarcinus is a genus of crabs in the family Pseudothelphusidae.
Ptychophallus is a genus of crabs in the family Pseudothelphusidae.
Pseudothelphusa 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:
Epilobocera is a genus of crabs in the family Epiloboceridae. It is the only genus in its family; this taxonomic arrangement follows the revision of the family Pseudothelphusidae by Álvarez and colleagues.
Chaceus is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Hypolobocera is a genus of freshwater crabs in the family Pseudothelphusidae, found in Venezuela, Colombia, Ecuador, and Peru. The major and future threats to these species include human-induced habitat loss/degradation and water pollution.
Lindacatalina is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Microthelphusa is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Moritschus is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Neopseudothelphusa is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Phrygiopilus is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Raddaus is a genus of crabs in the family Pseudothelphusidae, containing the following species:
Spirothelphusa is a genus of crabs in the family Pseudothelphusidae, containing the following species:
