The life cycle of Asymphylodora perccotti sp. n. (Trematoda: Lissorchiidae) in the Russian Southern Far East

► We have found that A. perccotti differ from A. progenetica, A. stenothyrae and A. amnicolae by the absence of progenesis. ► These differences are sufficient to establish A. perccotti as a new species, which represents the genus Asymphylodora. ► Our molecular data on 28S rDNA partial sequences indicate that A. perccotti is a member of the family Lissorchiidae.