Pseudorhabdosynochus urceolus
Pseudorhabdosynochus urceolus is a diplectanid monogenean parasitic on the gills of groupers. It has been described in 2011. Description. "Pseudorhabdosynochus urceolus" is a small monogenean. The species has the general characteristics of other species of "Pseudorhabdosynochus", 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. The sclerotized male copulatory organ, or "quadriloculate organ", has the shape of a bean with four internal chambers, as in other species of "Pseudorhabdosynochus". The vagina includes a  sclerotized part, which is a complex structure. The specific name is derived from Latin ("urceolus", a small jug or pitcher) and refers to the shape of the vagina. Hosts and localities. The graysby, "Cephalopholis panamensis" is the type-host of "Pseudorhabdosynochus urceolus", and the type-locality is Taboga Island in Panama.