T. serratus (Looss, 1900) Looss, 1902

Figures

Synonyms: Triodontus serratus Looss, 1900; Triodontophorus intermedius Sweet, 1909.

General:. Mouth collar appears in optical section as inflated round tube in ring around mouth. Submedian papillae short, conical. Numbers of elements of ELC and ILC 48-56. Buccal cavity oval, slightly wider than deep. Upper edge of esophageal teeth serrated. Cuticle striated but relatively smooth.

Male: Body length 12-16 mm. Esophagus length 0.9-1.2 mm. BC width 140-152, depth 78-95. Distance from anterior deirids to head end 720-730. Spicule length 3.0-3.45 mm. Gubernaculum length 348-392. Dorsal ray length 364-402. Dermal collar well developed on ventral side of genital cone. Appendages of genital 2 finger-shaped protrusions, the bases of which fuse behind cloaca. Protrusions of dermal collar absent.

Female: Body length 16-20 mm. Esophagus length 1.16-1.2. BC width 172-189; depth 93-118. Anterior deirids to head end 755-772.Vulva to tail tip 1.591-2.1. Anus to tail tip 367-658. Egg size 86-120 x 52-68.

Hosts: Equus caballus, E. asinus,E. caballus X E. asinus, E. przewalskii, E. hemionus, E. burchelli

Locality: cecum, colon.

Distribution: cosmopolitan.