Camallanus emydidius n. sp. (Nematoda: Camallanidae) in Trachemys dorbigni (Dumeril & Bibron, 1835) (Testudines: Emydidae) from Southern Brazil

摘要

This paper describes a new species of Camallanus found in the freshwater turtle Trachemys dorbigni. Sixty hosts collected in Southern Brazil were examined. All hosts (100%) were parasitized by a new species of Camallanus, which was described as Camallanus emydidius n. sp. The new species differs from other Camallanus species of freshwater turtles mainly because of the morphology of the right spicule, the number of male precloacal and postcloacal papillae, and the presence of ''mucrons'' in the female posterior extremity.