Dr. Murai Éva szerk.: Parasitologia Hungarica 13. (Budapest, 1980)

phological variations and the conspicuous lack of host specificity, the valid species of Pla giorchis are probably fewer than the literature indicates". Nevertheless, one should pay attention to the fact of morphological convergences at adult level. It can happen in Plagiorchis perhaps similarly as it succeeds in another problematic Digenean genus, Brachylaemus Dujardin, 1843 (Brachylaemidae). As our experimental studies have shown {MAS-COMA and MONTOLIU, in preparation), non-differing Brachylaemus species at adult level can be perfectly separated by the chaetotaxy of cercariae and intermediate host specificity at larval Fig. 1. Plagiorchis vespertilionis: complete specimen in ventral view