Four Trematodes from Korean Bats with Descriptions of Three New Species

Abstract
Plagiorchis vespertilionis (Muller, 1780) Braun, 1900 is reported from Korean bats, Vespertilio superans and Pipistrellus sp. Plagiorchis magnacotylus Park, 1939 and P. eptesici Ogata, 1940 are synonyms of P. vespertilionis (Muller, 1780) Braun, 1900. P. vespertilionis of Shtrom and Sondak, 1934 is a synonym of P. koreanum Ogata, 1938. Three new spp. in Lecithodendriinae are reported: Prosthodendrium thomasi and Acanthatrium jonesi from the Korean bat, Vespertilio superans; and Acanthatrium macyi from the Korean bat, Pipistrellus sp. Lecithodendrium chosenicum Ogata, 1940 is transferred to the genus Acanthatrium Faust, 1919. The status of Acanthatrium Faust, 1919 is discussed. The subgenus Mesothatrium Skarbilovich, 1947 is elevated to the rank of genus. Thus Acanthatrium (Mesothatrium) japonicum (Yamaguti, 1939) Skarbilovich, 1947 becomes the type MESOTHATRIUM.