''Xenarcturus'' is a
monotypic genus
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...
of
crustaceans
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...
belonging to the monotypic family Xenarcturidae. The only species is ''Xenarcturus spinulosus''.
The species is found in Southern America.
References
{{Taxonbar, from=Q18091767
Isopoda
Monotypic crustacean genera