Registros taxonômicos de cestóides trypanorhyncha/homeacanthoidea em elasmobrânquios coletados na costa do Estado do Paraná, Brasil / Taxonomic reports of trypanorhyncha/homeacanthoidea cestodes in elasmobranchs collected in the coast of the state of Paraná, Brazil

Specimes of elasmobranch fishes, captured in 1998 in the the State of Paraná, Brazil, were parasitized with Trypanorhyncha/Homeacanthoidea cestodes: Carcharhinus signatus with Heteronybelinia yamagutii (Dollfus, 1960) Palm, 1999 and H. nipponica (Yamaguti, 1952) Palm, 1999; Dipturus trachydermus (Krefft & Stehmann, 1975) with Mixonybelinia beveridgei (Palm et al, 1997) Palm, 1999. Details of scolex morphology of the two species of Heteronybelinia that expanded their desciptions were obtained. The known geographical distribution of the species is widened.