FIGURE 1. Prosorhynchus spp. from groupers. a, b Prosorhynchus tonkinensis n in Prosorhynchus Odhner, 1905 (Digenea: Bucephalidae) from the orange-spotted grouper Epinephelus coioides (Hamilton, 1822) (Epinephelidae), including Prosorhynchus tonkinensis n. sp., from the Gulf of Tonkin, Vietnam

FIGURE 1. Prosorhynchus spp. from groupers. a, b Prosorhynchus tonkinensis n. sp., note the spermatophore (a) and intended posterior extremity (b); c Prosorhynchus sp. A (VN); d Prosorhynchus sp. B (VN); e P. luzonicus; f Prosorhynchus maternus. Uterus in bold outline and treated as transparent. Scale bars: a, b, c, d=100 µm; e, f=200 µm.