Caligus nolani n. sp. (Copepoda: Caligidae), a parasite of Patagonotothen sima (Richardson) (Teleostei: Pisces) from the Falkland Islands, and a note on Clavella bowmani, Kabata, 1963 (Copepoda: Lernaeopodidae)

Abstract

Both sexes of a new species of parasitic copepod, Caligus nolani (Caligidae: Siphonostomatoida) from the skin of the nototheniid fish Patagonotothen sima from the Falkland Islands, are described. The male differs superficially from the female in having a more rounded cephalothoracic shield, a thinner genital complex and a two-segmented abdomen. C. nolani can be separated from all other species of Caligus by the shapes of the sternal furca and second antenna. Clavella bowmani Kabata, 1963 from P. sima is the first record of this species from the Falkland Islands.