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Memórias do Instituto Oswaldo Cruz
On-line version ISSN 1678-8060
VEITENHEIMER-MENDES, Inga Ludmila and ALMEIDA CAON, Jane Elisabeth Marques de. Drepanotrema kermatoides (Orbigny, 1835) (Mollusca, Planorbidae), host of a paramphistomid (Trematoda), in Rio Grande do Sul, Brazil. Mem. Inst. Oswaldo Cruz [online]. 1989, vol.84, n.1, pp. 107-111. ISSN 1678-8060. http://dx.doi.org/10.1590/S0074-02761989000100019.
Morphological descriptions and illustrations of the redia, the imature cercaria and mature cercaria, and encysted metacercaria, found in a infected specimen of Drepanotrema kermatoides (Orbigny, 1835) are presented. The infected mollusk was found in Chico Lumã creek (29º56'03"S and 50º35'59"W), Santo Antônio County, Rio Grande do Sul State, in May of 1983. These larval stages probably are part of a cycle of a rumen parasite of the genus Paramphistomum (Fischoeder, 1901).
Keywords : Drepanotrema kermatoides; intermediate host; Paramphistomidae; Rio Grande do Sul.