The first discovery of merocercoids of the cestode Paradilepis scolecina (Rudolphi, 1819) in the Angara River, the basin of the Yenisei River, has been described. Three encapsulated merocercoids were found in the liver of the roach Rutilus rutilus (Linnaeus, 1758). The description and measurements of one of the discovered merocercoids are presented.
Polyaeva et al. (Wed,) studied this question.