Petrovinema poculatum (Looss, 1900) Ershov, 1943

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Synonyms: Cylicostephanus poculatus (Looss, 1900) Cram, 1924; Cyathostomum poculatum Looss, 1900; Cylichnostomum poculatum (Looss, 1900) Looss, 1902; Cylicostomum poculatum (Looss, 1900) Gedoelst, 1903; Trichonema poculatum (Looss, 1900) LeRoux, 1924; Petrovinema poculatum (Looss, 1900) Ershov, 1943

General: Tip of submedian papillae spindle-shaped, 2 to 3 times as long as thick. ELC consists 30-36 elements, ILC – 84. Tip of ELC rounded. Medial insertion of septum intracoronare situated at junction of ELC and ILC.

Male: Body length 8.0-9.8 mm. Esophagus length 771-853. BC width 84-96, depth 80-96. distance from anterior deirids to head end 0.470-0.556, from excretory pore— 0.464-0.551, from NR — 0.4550.522, Spicules lengh length 0.675-0.754, Gubernaculum length — 0.131-0.151, length of dorsal ray to base of externo-dorsal ray 0.435-0.493. Dermal collar well developed on ventral side of genital cone. Appendages of genital cone — pair delicate fingershape protrusions. protrusions of dermal collar absent.

Female: Body length 10.5 -12.5 mm, length of esophagus 771-935, width of BC 87-101, depth 92-102, distance from anterior deirids to head end 536-722, from excretory pore 493-644, from NR — 595, vagina length 290-328, distance from vulva to tail tip 492-574, from anus to tail tip — 328-377, eggs size 61-73x32-44.

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

Locality: cecum, colon.

Distribution: cosmopolitan.