Sphyrion Genus (Copepoda, Sphyridae) Parasites in Atlantic Fishes

Sphyrion quadricornis sp. nov. is found in Coelorhynchus braueri from the South-Eastern Atlantic (27°-32°C, 16°-17°W). It differs from the closely related S. lumpi (Kryer) in а cephalothorax shape, meristic characteristics and size ratio of the body parts. Redescriptions are given for S. lumpi (from Sebastes mentella, S. marinus and Coryphaenoides rupestris) from the Northern Atlantic and for S. laevigatum Guérin (from Genypterus capensis and G. blacodes) from the Southern Atlantic. S. kingi Cunningham, 1871 is considered as a synonym of S. laevigatum. Sphyrion is shown to be associated with deep-sea fishes. A supposition is made on how the Sphyrion’s fauna was formed in the Atlantic Ocean