Key to the species of the genus Paraphronima

1 Pleonite 1, ventral margin of epimeral plate forms acute angle with body axis anteriorly. Pereopod 7 much shorter than P6, only reaching limit of carpus of P6................. .................................................................................................... P. gracilis Claus, 1879 .

­ Pleonite 1, ventral margin of epimeral plate evenly rounded, almost perpendicular to body axis. Pereopod 7 only slightly shorter than P6 .............. P. crassipes Claus, 1879 .