C. brevicapsulatus (Ihle, 1920) Ershov, 1943

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Synonyms: Cylicostomum brevicapsulatum Ihle, 1920; Cylicobrachytus brevicapsulatum (Ihle, 1920) Cram, 1924; Trichonema brevicapsulatum (Ihle, 1920) Monnig, 1926.

General: Posterior edge of MC situated anterior to edge of BC. Dorsal and ventral notches on mouth collar absent. Amphids project above surface. Tip of submedian papillae bullet-shaped, 2-3 times as long as thick. Stalk of submedian papillae longer than broad. ELC markedly less numerous (42-48 against 50- 65) and longer than ILC. Elements of ELC longer than broad. Tip of ELC pointed. Tips of elements ILC rounded. Insertion point for posterior ends of elements of ILC on anterior edge of buccal capsule. Walls BC are very delicate, inconspicuous. Buccal cavity extremely shallow. Dorsal gutter not apparent. Esophageal funnel shallow. Excretory pore posterior to NR. Anterior deirids near middle of glandular esophagus. Esophagointestinal valve not elongated.

Male: Body length 9.0-11.5 mm. Esophagus length 450-540. BC width 81-130, depth 9-15. Distance from anterior deirids to head end about 353–412, from excretory pore 341–434. Spicules length 1.74-1.97 mm. Gubernaculum length 210-270. Dorsal ray length 480-600. Ventral rays shorter than laterals. Dermal collar well developed on ventral side of genital cone. Appendages of genital cone separated on several pieces with different length fingershape appendages. Protrusions of dermal collar finger-shape.

Female: Body length 10.0-13.9 mm, length of esophagus 550-635, width of BC 106-139, depth 13-17. Distance from anterior deirids to head end about 466–690, from excretory pore 417–542. Distance from vulva to tail tip 480-740, from anus to tail tip 210-370, egg size 85x90x47x50.

Hosts: Equus caballus, E. asinus.

Locality: cecum, colon.

Distribution: Asia, Europa, North and South America.