C. ultrajectinus (Ihle, 1920) Ershov, 1943

Figures

Synonyms: Cylicostomum ultrajectinum Ihle, 1920; Trichonema ultrajectinum (Ihle, 1920) LeRoux, 1924; Cylicodontophorus ultrajectinum (Ihle, 1920) Cram, 1924

General: Posterior edge of MC situated at anterior edge of BC. Amphids not projects above MC surface. Tip of submedian papillae bullet-shaped, oval and short. Stalk of submedian papillae longer than broad. ELC markedly less numerous (10-12 against 46 elements, 10-12 longer than others) and shorter than ILC. Elements of ELC as long as broad, tips rounded. Tips of elements of ILC pointed. Insertion point for posterior ends of elements of ILC at 1/4 or less of BC depth. Walls BC are concave with developed posterior ring. Buccal cavity cylindrical. Dorsal gutter not apparent.. Esophageal funnel enlarged. Excretory pore posterior and anterior deirids posterior to EI. Esophagointestinal valve not elongated.

Male: Body length 11-15 mm. Esophagus length 620-750. BC width 143-190, depth 55-63. Spicules length 1.75 mm. Gubernaculum length 273. Dorsal ray length 620-650. Ventral rays length equal to laterals. Dermal collar well developed on ventral side of genital cone. Appendages of genital cone long sometime bifurcated distally.

Female: Body length 11-19 mm, length of esophagus 770-800, BC width 143-190, depth 55-63. vagina length 500. distance from vulva to tail tip 435-650. from anus to tail tip — 170-270. eggs size 130x140x59-65.

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

Locality: cecum, colon.

Distribution: cosmopolitan.