Dugesia circumcisa A transverse section of pharynx of paratype YWSZ11, showing musculature B sagittal section of paratype YWSZ8, showing poorly developed ovary C sagittal section of paratype YWSZ9, showing hyperplasic ovaries and poorly developed testes D sagittal section of paratype RMNH VER. 19974.a, showing hyperplasic ovaries E transverse section of paratype YWSZ11, showing openings of oviducts into bursal canal F sagittal section of holotype YWSZ2, showing musculature of bursal canal. Abbreviations: bc: bursal canal; ca: common atrium; cm: circular muscles; ho: hyperplasic ovaries; lm: longitudinal muscles; lod: left oviduct; lu: lumen; ov: ovary; rod: right oviduct; te: testis. Scale bars: 100 μm.