The species has the general characteristics of other diplectanids, with a flat body and a posterior haptor, which is the organ by which the monogenean attaches itself to the gill of is host.

The haptor bears two squamodiscs, one ventral and one dorsal, which are made up of numerous rows of rodlets.

The primary canal is thin-walled, with regular diameter and wide lumen, and is coiled once.

The accessory structure is small, inserted into the anterior extremity of the secondary chamber.

[7] The type-host of Pseudorhabdosynochus epinepheli is the grouper Epinephelus akaara and the type-locality if off Japan.