Checklist of isopods (Crustacea : Peracarida : Isopoda) from the Eastern Tropical Pacific

Literature dealing with isopods from the east Pacific is reviewed. Marine and brackish water species reported at least once in the Eastern Tropical Pacific zoogeographic subregion, which extends from Magdalena Bay, on the west coast of Southern Baja California, Mexico, to Paita, in northern Peru, are listed, and their ranges along the Pacific coast of America are provided. Unpublished records, based on material kept in the collections of the authors, were also considered, to modify previously published distribution ranges within the study area. A total of 124 species, belonging to 68 genera, is included in the checklist and new records or new distribution data are provided for 19 species. A list of names of species and subspecies currently recognized as invalid for the area is also included.