Ceratothoa verrucosa (Isopoda: Cymothoidae) attached by Choricotyle elongata (Platyhelminthes: Monogenea) in the mouth cavity of red seabream Pagrus major

Abstract

Over more than one century since 1894, cymothoid isopods attached by the diclidophorid monogenean Choricotyle elongata (Goto, 1894) in the mouth cavity of Japanese sparids have not been exactly identified. This note reports that those isopods are identifiable as Ceratothoa verrucosa (Schioedte & Meinert, 1883) based on material of the species attached by Ch. elongata in the mouth cavity of a red seabream, Pagrus major (Temminck & Schlegel, 1843), from the Seto Inland Sea.