Abstract

Abstract Parthenitae and cercariae of Plagiorchis. multiglandularis Semenov, 1927 are recorded in Lymnaea stagnalis (Linnaeus, 1758) for the fi rst time in Ukraine; their morphological characteristics are specifi ed. Diagnostic characters of P. multiglandularis parthenitae and cercariae found in Ukrainian Polissia are compared with those from other regions. To confi rm the validity of the species, a comparison of the morphometric data of this trematode larvae with the cercariae of Plagiorchis elegans (Rudolphi, 1802) Braun, 1902, found in molluscs L. stagnalis, L. ralustris and L. corvuses, was performed. It was determined that P. multiglandularis cercariae diff er from those of P. elegans in size and position of the penetration glands.

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