Taxonomy of Pinnotheres bipunctatus Nicolet, 1849 with a distributional checklist of the Pinnotheridae of Chile and Peru, and a list of the Crustacea described by Hercule Nicolet in the Atlas of the Physical and Political History of Chile

Because the male holotype of Pinnotheres bipunctatus Nicolet, 1849 possesses a carpus of the third maxilliped larger than the propodus, the dactylus disto-medially inserted on the ventral margin of this latter article extending far beyond its tip, and a laterally expanded telson, wider that the sixth abdominal somite, it is excluded from Pinnotheres Bosc, 1802 and assigned to Pinnaxodes Heller, 1865 [type species P. chilensis (H. Milne Edwards, 1837)]. Although males of these species can morphologically be separated, the holotype of P. bipunctatus resembles a juvenile, consequently, a categorical taxonomic distinction between this species and P. chilensis will require a comparative morphological study of the preadult stages of this latter species. A distributional checklist and host of the Pinnotheridae recorded for the Peru-Chile region is included, along with a list and the taxonomic status of the 5 genera and 53 species of Crustacea described by Hercule Nicolet in the ¨Physical and Political History of Chile¨.