Fig. 4 in A young parasite in an old fish host: A new genus for proteocephalid tapeworms (Cestoda) of bowfin (Amia calva) (Holostei: Amiiformes), and a revised list of its cestodes

Fig. 4. Laruella perplexa (La Rue, 1911) n. comb. from Amia calva, Illinois and Mississippi (A–D) and Proteocephalus ambloplitis (Leidy, 1887) from Micropterus dolomieu (E, F). A – terminal genitalia with uterine diverticula near anterior part of proglottids (MHNG-PLAT-0063348), dorsal view; vitelline follicles are not illustrated. B, C – terminal genitalia, frontal section and ventral view of paratype (USNM 1348679). D – posterolateral end of proglottid (MHNG-PLAT-0063348); note band of posterior (median) vitelline follicles bent inwards. E – proximal part of vaginal canal, dorsal view; note numerous loops. F – cirrus-sac, dorsal view; note large, thick-waled vaginal sphincter and strongly convoluted internal sperm duct. Abbreviations: CI - cirrus; CS - cirrus sac; DOC – dorsal osmoregulatory canal; EG – egg; MG – Mehlis' gland; MVF – median vitelline follicles; OV – ovary; SR – seminal receptacle; TE – testes; UD – uterine diverticula; VA – vagina; VD – vas deferens; VF – vitelline follicles; VOC – ventral osmoregulatory canal; VS – vaginal sphincter.