FIGURES 17–20 in Towards resolving the problematic status of the digenean genus Astiotrema Looss 1900: An updated concept and revision of species composition for Astiotrema (sensu stricto)

FIGURES 17–20. Intra-specific variations observed in Astiotrema odhneri Bhalerao, 1936. 17. A. odhneri (Syn. Astiotrema reniferum of Odhner, 1911 nec Looss, 1898), ventral view, redrawn from Yeh & Fotedar (1958, fig. 5) after Odhner (1911). 18. A. odhneri (Syn. Astiotrema hanumantharai Dhanumkumari, 1999), ventral view, redrawn from Dhanumkumari (1999, fig. 1). 19. A. odhneri (Syn. Astiotrema nathi Gupta, 1954), ventral view, redrawn from Gupta (1954, fig. 1). 20. A. odhneri (Syn. Astiotrema sudanensis Khalil, 1959), dorsal view, redrawn from Khalil (1954, fig. 1). Abbreviations: AT, anterior testis; Ce, cecum; CP, cirrus-pouch; Es, esophagus; GP, genital pore; MG, Mehlis' gland; Oo, oötype; OS, oral sucker; Ov, ovary; Ph, pharynx; PP, pars prostatica; PT, posterior testis; SR, seminal receptacle; SV, seminal vesicle; Ut, uterus; VD, vitelline duct; V-D, vasdeferens; VF, vitelline follicle; VS, ventral sucker. Scale bars: Fig. 17 = 1,000 µm; Fig. 18 = 1,000 µm; Fig. 19 = 500 µm; Fig. 20 = 500 µm.