ALLOPODOCOTYLE MARGOLISI N-SP (DIGENEA, OPECOELIDAE) FROM THE DEEP-SEA FISH CORYPHAENOIDES (CHALINURA) MEDITERRANEUS IN THE NORTHEASTERN ATLANTIC

An opecoelid digenean parasite, Allopodocotyle margolisi n.sp., is des cribed from the macrourid fish Coryphaenoides (Chalinura) mediterraneu s from benthopelagic waters of the North Rockall Trough, NE Atlantic O cean. This is the first member of the genus to be recorded from deep-s ea fishes. It is distinguished from its neritic congeners on the basis of features that include the arrangement of the testes, length of the cirrus-sac, and sucker-ratio. Its distinctness from other opecoelids from deep-sea fishes is also commented upon.