Digenetic trematodes (Cryptogonimidae, Acanthostominae) parasites of the Caiman, Caiman crocodilus yacare (Reptilia, Crocodylia) from the Pantanal Mato-grossense, Brazil, with the description of a new species

Abstract

Proctocaecum dorsale n. sp. is described and Caimanicola marajoara Freitas & Lent, 1938 is redescribed based on specimens collected from Caiman crocodilus yacare (Daudin) from the Pantanal Mato-grossense, State of Mato Grosso do Sul, Brazil. This report extends southward the known geographic distribution of C. marajoara. It is the first record of the genus Proctocaecum in South America, and in the caiman. Proctocaecum dorsale n. sp. differs from the other eight species in the genus by the dorsal location of the anal openings, instead of being lateral or in the posterior extremity of the body.