Monopisthocotylea

The Monopisthocotylea are a subclass of parasitic flatworms in the class Monogenea.

Classification
There are only two subclasses in the class Monogenea:
 * Monopisthocotylea. The name means "a single posterior sucker" - the attachment organ (the haptor) is simple.
 * Polyopisthocotylea. The name means "several posterior suckers" - the attachment organ (the haptor) is complex, with several clamps or suckers.

The subclass Monopisthocotylea contains these orders:
 * Order Capsalidea
 * Order Dactylogyridea
 * Order Gyrodactylidea
 * Order Monocotylidea
 * Order Montchadskyellidea

Example of species

 * Entobdella soleae, a capsalid from the sole Solea solea off the United Kingdom
 * Gyrodactylus salaris, a gyrodactylid, or "salmon fluke", a deadly parasite of salmon in Norway
 * Calydiscoides euzeti, a diplectanid from the emperor, Lethrinus rubrioperculatus
 * Pseudorhabdosynochus epinepheli, a diplectanid from groupers, and many other species of Pseudorhabdosynochus
 * Cichlidogyrus evikae and many other species of the genus Cichlidogyrus, which are parasites on the gills of cichlid fish