Nematophila ( Travassos, 1934 )

Lenis, Carolina & Vélez, Imelda, 2011, Digeneans in Trachemys callirrostris callirostris and Podocnemis lewyana (Testudinata) from the Magdalena River, Colombia: description of Pseudonematophila n. gen. and amendment of Nematophila Travassos, 1934 (Cladorchiidae: Schizamphistominae), Zootaxa 3095, pp. 49-62 : 55

Nematophila ( Travassos, 1934)

( Fig. 4 )

Type species: Nematophila grandis (Diesing, 1839) Travassos, 1934 .

Emended diagnosis: Body large, oval, wide, dorsoventrally flattened, may be very concave ventrally. Tegument thick, without spines. Acetabulum small or medium compared to body, terminal or subterminal ventral, aperture oval to longitudinal. Pharynx with anterior and posterior sphincters, and tiny intramural or extramural pharyngeal sacs. Oesophagus short; long, well developed, cylindrical bulb present. Caeca slightly sinuous, terminate far short of acetabulum at about two – thirds of body – length. Testes in mid – region of body, intercaecal, lobed or branched, tandem, oblique, may be overlap caeca laterally. External seminal vesicle. Cirrus – sac not strongly developed, contains coiled duct that expands to form dilated chamber. Contracts distally to form narrow duct, which passes through tiny papilla then forms narrow to open on genital papilla; prostatic cells present distally. Genital pore immediately bifurcal or postbifurcal.

Ovary small to medium, well separed from posterior testis and acetabulum just posterior to level of caecal ends or between them, entire to irregular. Ootype dorsal to ovary. Laurel´s canal not reported. Melhis´gland posterior to ovary. Vitelline follicles in lateral extracaecal fields from level of oesophageal bulb to level of acetabulum. Utero intercaecal, forms transverse coils, dorsal to testes or between them; metraterm ventral to male ducts. Excretory vesicle V – shaped, pore dorsal to anterior margin of acetabulum. In stomach or intestine of freshwater turtles, Mex-

Figures

FIGURE 4. Species of Nematophila Travassos, 1934. a. N. grandis adapted from Caballero et al. 1959. b. N. venezuelensis n. comb. adapted from Cordero & Vogelsang (1940). c. N. argentinum n. comb. adapted from Cordero & Vogelsang (1940). Scale 2 mm.