T. nipponicus Yamaguti, 1943

Figures

Synonyms: Triodontophorus brochotribulatus Martinez Gomez, 1966; Triodontophorus hsiungi K'ung , 1958.

General:. Mouth collar flattened. Submedian papillae short, conical. Numbers of elements of ELC and ILC 58-72. Buccal cavity almost round, nearly as wide as deep. Upper edges of esophageal teeth deeply denticulated. Cuticle striated but relatively smooth.

Male: Body length 8.1-16.8 mm. Esophagus length 0.8-1.2 mm. BC width 156-228; depth 130-180. Spicule length 0.85-1.12 mm. Gubernaculum length 263-272. Dorsal ray length 565-603. Dermal collar poorly developed on ventral side of genital cone. Appendages of genital cone inconspicuous.

Female: Body length 11-18.5 mm. Esophagus length 0.9-1.5 mm. BC width 156-228; depth 130-180. Anterior end to anterior deirids 650-750; to excretory pore 660-710. Vulva to tail tip 570-984. Anus to tail tip 120-230. Egg size 90-99 x 48-52.

Hosts: Equus caballus, E. przewalskii, E. hemionus.

Locality: cecum, colon.

Distribution: Asia, Europe, North America, South America.