''Potamalpheops'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of shrimp in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Alpheidae Alpheidae is a family of caridean snapping shrimp, characterized by having asymmetrical claws, the larger of which is typically capable of producing a loud snapping sound. Other common names for animals in the group are pistol shrimp or alpheid s ...

. It was originally erected by Powell in 1979 to house species from Africa. Later, Horton H. Hobbs, Jr. realised that the

troglobitic A troglobite (or, formally, troglobiont) is an animal species, or population of a species, strictly bound to underground habitats, such as caves. These are separate from species that mainly live in above-ground habitats but are also able to live u ...

shrimp he had described in 1973 from

Oaxaca Oaxaca ( , also , , from nci, Huāxyacac ), officially the Free and Sovereign State of Oaxaca ( es, Estado Libre y Soberano de Oaxaca), is one of the 32 states that compose the political divisions of Mexico, Federative Entities of Mexico. It is ...

, Mexico as ''Alpheopsis stygicola'', also belonged to the genus, and in 1991, A. J. Bruce described a new species from Australia, further expanding the genus' geographical range. It is now thought to represent a

relict A relict is a surviving remnant of a natural phenomenon. Biology A relict (or relic) is an organism that at an earlier time was abundant in a large area but now occurs at only one or a few small areas. Geology and geomorphology In geology, a r ...

taxon from the

Tethys Sea The Tethys Ocean ( el, Τηθύς ''Tēthús''), also called the Tethys Sea or the Neo-Tethys, was a prehistoric ocean that covered most of the Earth during much of the Mesozoic Era and early Cenozoic Era, located between the ancient continents ...

. The following species are currently accepted as valid: *'' Potamalpheops amnicus'' *'' Potamalpheops darwiniensis'' *'' Potamalpheops galle'' *'' Potamalpheops hanleyi'' *'' Potamalpheops haugi'' *'' Potamalpheops johnsoni'' *'' Potamalpheops kisi'' *'' Potamalpheops miyai'' *'' Potamalpheops monodi'' *'' Potamalpheops nazgul'' *'' Potamalpheops palawensis'' *'' Potamalpheops pininsulae'' *'' Potamalpheops pylorus'' *'' Potamalpheops stygicola'' *'' Potamalpheops tigger'' *''

Potamalpheops tyrymembe ''Potamalpheops'' is a genus of Caridea, shrimp in the family (biology), family Alpheidae. It was originally erected by Powell in 1979 to house species from Africa. Later, Horton H. Hobbs, Jr. realised that the troglobite, troglobitic shrimp he h ...

References

{{Taxonbar, from=Q7234610 Alpheidae Decapod genera