New subgeneric names for the most commercially important shrimp genus Penaeus Fabricius, 1798 (Crustacea, Decapoda, Penaeidae)

Although a recent comprehensive molecular phylogenetic study on Penaeus Fabricius, 1798 reinstated a single genus for these economically important shrimps, several clades in the molecular phylogenetic tree do not have formal names. Subgeneric names are given herein to five of these clades if Penaeus is to be split. A key to the subgenera in Penaeus is also provided