Three new species of Xiphidiocercariae from the thiarid snail Thiara tuberculata in Palakkad, Kerala, India

Three new species of Xiphidiocercous cercariae, Cercaria sp. IX Malabar n.sp., Cercaria sp. X Malabar n.sp. and Cercaria sp. XI Malabar n.sp. were recovered from the thiarid snail Thiara tuberculata collected from freshwater bodies in the Palakkad district of Kerala. The three new species are described in detail and compared with their related species to establish their systematic position.