Image of Haplorchis taichui; a. Drawing of cercaria structure b. Cercaria without staining c. Redia without staining d.–g. Images of Scanning Electronmicroscope Abbreviations: os – oral sucker, es – eye spot, p – pharynx, pg – penetration gland, gi – genital primordial, eb – excretory bladder, lf – lateral finfold, ta – tail, df – dorsal finfold, re – redia, c – cercaria, sp – spine (scale a, b = 100 µm, c = 20 µm).