Cylicostephanus goldi
(Boulenger, 1917) Lichtenfels, 1975

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Synonyms: Cylichnostomum goldi Boulenger, 1917; Cylicostomum goldi (Boulenger, 1917) Ransom and Hadwen, 1918; Trichonema goldi (Boulenger, 1917), Le-Roux, 1924; Cylicocercus goldi (Boulenger, 1917) Cram, 1924; Schulzitrichonema goldi (Boulenger, 1917) Ershov, 1943; Cylicotetrapedon goldi (Boulenger, 1917) K'ung, 1964; Cylicostomum tridentatum Yorke and Macfie, 1920; Cylicostomum ornatum Kotlan, 1919; Trichonema ornatum (Kotlan, 1919) Le-Roux, 1924; Cylicostomias ornatum (Kotlan, 1919) Cram, 1925; Cyathostomum ornatum (Kotlan, 1919) Mclntosh, 1933; Cylicodontophorus ornatum (Kotlan, 1919) Ershov, 1939; Cylicostephanus ornatus (Kotlan, 1919) Lichtenfels, 1975.

General: Tip of submedian papillae cone-shaped, 2 times as long as thick. ELC with20-22 elements; ILC with 30-38. Insertion for ELC on tips of elements of ILC. Tips of elements of ILC pointed. Insertion for ILC at 1/4 or less of BC depth. Septum intracoronare origin placed on BC. Walls BC with compound curve, thicker anteriorly, Buccal cavity wider than deep. Dorsal gutter button-like. Anterior deirids and excretory pore 250-300 from anterior end.

Male: Body length 5.2-7.8 mm. Esophagus length 200-422. BC width 48-65; depth 22-24. Spicule length 852-987. Gubernaculum large, with dorsal handle and ventral notch; length 156-189. Dorsal ray length 308-495. Ventral rays length equal to laterals. Genital cone conical, slightly protrudes beyond copulatory bursa. Dermal collar well developed on ventral side of genital cone. Appendages of genital cone absent.Paired protrusions of dermal collar present.

Female: Body length 5.7-9.2 mm. Esophagus length 408- 500. BC width 52-78; depth 24-26. Vulva to tail tip 178-212. Anus to tail tip 86-110. Egg size 100-114 x 47-56. Infundibulum length about equal to sphincter length. Tail of adult females digitiform, curved dorsally at right angle; sublateral and ventral protrusions well developed.

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

Locality: cecum, colon.

Distribution: cosmopolitan.