Abstract:The adult of Exorchis mupingensis sp. nov. were obtained from the intestine of Parasilurus asotus occurring in Muping Lake of western Dongting Lake area. Its first intermediate host is Oncomelania hupensis, and the second intermediate host is Carassius auratu. Its life cycle comprises: adult, cercaria, one generation redia, metacercaria, excysted metacercaria, and adolescaria. The excretory bladders of the adult and adolescaria of the adult are nontypical v-shaped, namely comprising v-shpaed excretory bladders and y-shpaed excretory bladders with inverted triangle short main trunk, which is different from the morphological structure of other reported Exorchis spp., and the adult and the larva have other obvious diffenences from other Exorchis spp. which have been already reported.
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