Pseudione, Kossmann, 1881

Williams, Jason D., Boyko, Christopher B. & Madad, Asma Z., 2019, Branchial parasitic isopods (Crustacea: Isopoda: Bopyridae: Pseudioninae) of hermit crabs (Crustacea: Decapoda: Diogenidae) from the western Pacific, with descriptions of a new genus and three new species, Raffles Bulletin of Zoology 67, pp. 83-118 : 109

Key to females of Pseudione sensu lato from hosts in Axiioidea, Gebiidea, Nephropoidea, Paguroidea, and

Lithodidae

1. Pereomere 2 narrower than 3, 3 slightly narrower or subequal to 4; lateral plates elongate, tapering........................................ .................................................................................. Pseudione sensu stricto (on Axiioidea, Gebiidea, Nephropoidea)

– Pereomere 2 and 3 subequal in width, 3 wider than 4; lateral plates rounded, weakly to strongly produced........................... ............... Eremitione , new genus (on Lithodidae, Paguroidea )