Calicobenedenia polyprioni n. gen., n. sp. (Monogenoidea : Capsalidae) from the external surfaces of wreckfish, Polyprion americanus (Teleostei : Polyprionidae), in the north Atlantic

Calicobedeniallia polyprioni n. sp. (Capsalidae) is described from the exte rnal surfaces (skin and eye) of wreckfish, Polyprion americanus (Teleostei, Perciformes, Polyprionidae), from the north Atlantic Ocean. The monotypic Calicobenedenia n. gen. is proposed for this species and is characterized, in part, by its members possessing an aseptate haptor armed with 14 submarg inal hooks and 1 pair of anchors, a common genital pore opening marginally immediately posterior to the left cephalic lobe, 2 testes juxtaposed near t he body midlength, and by lacking cephalic suckers or adhesive discs, acces sory haptoral sclerites, and a uterine valve. The new genus most closely re sembles Entobdella, which differs from Calicobenedenia by having an aseptat e haptor armed with 14 submarginal hooks, 2 pairs of anchors, and a pair of accessory sclerites.