S. asini Boulenger,1920

Figures

Synonyms: Delafondia asini (Boulenger, 1920) Skrjabin, 1933

General: ELC and ILC resembling thouse of S. equinus. Only bilobed dorsal tooth present in buccal cavity. Lobes of tooth low, flat, grooved; extend less than one-third depth of BC. Excretory pore at level of BC. Anterior deirids near middle of glandular esophagus, 1.5 mm from anterior end.

Male: Body length 18-32 mm. Esophagus length 1.6 — 2.4 mm. BC width 0.97-0.99 mm, depth 0.84-0.89 mm.. Dorsal lobe of copulatory bursa equal to or shorter than lateral lobes. Spicules length 1.6-1.9 mm. Gubernaculum length 376-384. Dorsal ray length 608-688. Dermal collar well developed on ventral side of genital cone. Appendages of genital cone poorly developed. Protrusions of dermal collar absent.

Female: Body length 30-42 mm. Esophagus length 1.65-2.6, BC width 1.19-1.26 mm, depth 0.90-91 mm, distance from vulva to tail tip 6.0-7.0 mm, from anus to tail tip 0.4-0.6, egg size 61-66 x 37-46.

Hosts: E. asinus, E. burchelli, E. zebra hartmannae.

Locality: cecum, colon.

Distribution: Africa, Asia, North America