pseudorhabdosynochus querni is a species of diplectanid monogenean parasitic on the gills of the grouper "epinephelus quernus". it was described in 1968 by satyu yamaguti under the name "diplectanum querni" and transferred to the genus "pseudorhabdosynochus" in 1986. the species has been redescribed in 2005 from the type-material.