FIGS 11-16 in Pseudocrepidobothrium ludovici sp. n. (Eucestoda: Proteocephalidea), a parasite of Phractocephalus hemioliopterus (Pisces: Pimelodidae) from Brazilian Amazon

FIGS 11-16. Pseudocrepidobothrium ludovici sp. n. from Phractocephalus hemioliopterus. (11) MHNG INVE 79283, paratype. Cirrus-sac and vagina, dorsal view; note the presence of a vaginal sphincter. (12) Schematic view of the uterus in gravid proglottis. (13) MHNG INVE 79341, paratype. Pregravid proglottis, transverse section at testes level. (14) MHNG INVE 79341, paratype. Pregravid proglottis, transverse section at ovarian level. (15, 16) Eggs in distilled water, captured with Leica DMLB, showing the bi-layered embryophore. (15) IPCAS C-610, (Field number Br 649 3/5w). (16) MHNG INVE 22103, (field number Br 445). Abbreviations: ci = cirrus; cs = cirrus-sac; do = dorsal osmoregulatory canal; em = embryophore; lm = internal longitudinal musculature; ln = longitudinal lateral nerves; oe = outer envelope; om = oncospheric membrane; on = oncosphere; ov = ovary; te = testes; ut = uterus; va = vas deferens; vc = vaginal canal; vi = vitellaria; vo = ventral osmoregulatory canal; vs = vaginal sphincter. Scale-bars: 12 = 500 µm; 11, 13, 14 = 250 µm; 15, 16 = 20 µm.