Dugesia majuscula A transverse section of paratype YHYQ8, showing longitudinal and circular muscles in outer and inner pharyngeal musculature B horizontal section of paratype YHYQ 7, showing hyperplasic ovaries C transverse section of paratype YHYQ8, showing opening of the left oviduct D sagittal section of paratype YHYQ10, showing dorsal testes E transverse section of paratype YHYQ8, showing course of a vas deferens F sagittal section of paratype YHYQ3, showing opening of a vas deferens into seminal vesicle. The anterior is to the front in A, C, E and anterior is to the right in B, D, F. Abbreviations: bc: bursal canal; ca: common atrium; cb: copulatory bursa; cm: circular muscles; go: gonopore; ho: hyperplasic ovaries; lm: longitudinal muscles; lod: left oviduct; ma: male atrium; pp: penis papilla; sv: seminal vesicle; te: testis; vd: vas deferens. Scale bars: 100 μm.