A New Species of Choricotyle (Monogenoidea: Diclidophoridae) from Ctenosciaena gracilicirrhus (Teleostei: Sciaenidae), a Marine Fish Occurring in the Littoral Zone from the State of Rio de Janeiro, Brazil

摘要

A new species of Choricotyle parasitizing the marine fish Ctenosciaena gracilicirrhus (Teleostei: Sciaenidae) from Angra dos Reis, Rio de Janeiro, Brazil (23deg00'24"S; 44deg19'05"W) is proposed. Choricotyle rohdei n.sp. differs from all other species of the genus mainly by the number of genital spines, which varies from 28 to 30, whereas others present 7 to 12 spines.