C. elongatus (Looss, 1900) Ershov, 1943

Figures

Synonyms: Cyathostomum elongatum Looss, 1900; Cylichnostomum elongatum (Looss, 1900) Looss, 1902; Cylicostomum elongatum (Looss, 1900) Gedoelst, 1903; Trichonema elongatum (Looss, 1900) LeRoux, 1924.

General: Posterior edge of MC situated anterior to edge of BC. Amphids only slightly projects above MC surface. Tip of submedian papillae bullet-shaped, about 2-3 times as long as thick. Stalk of submedian papillae longer than broad. ELC markedly less numerous (50-54 against 84-86) and longer than ILC. Elements of ELC longer than broad. Tips of elements of ILC pointed. Insertion point for posterior ends of elements of ILC on anterior edge of buccal capsule. Walls BC are concave. posterior ring of BC wall well developed. Buccal cavity cylindrical. Dorsal gutter not apparent.. Esophageal funnel greatly enlarged, with thick cuticular lining. Excretory pore posterior to NR. Anterior deirids near middle of glandular esophagus. Esophagus greatly elongated with posterior half enlarged but cylindrical. Esophagointestinal valve not elongated.

Male: Body length 12.2-16.2 mm. Esophagus length 1.42-1.44 mm. BC width 122-156, depth 63 -97. Spicules length 2.1-2.2 mm. Gubernaculum length 252-272. Dorsal ray length 1.65-1.9 mm. Ventral rays length shorter than laterals. Dermal collar well developed on ventral side of genital cone. Appendages of genital cone oval.

Female: Body length 16-17 mm, length of esophagus 1.55 mm, width of BC 178, depth 113, distance from vulva to anus 162, from anus to tail tip 243, egg size .105-111x48-52.

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

Locality: cecum, colon.

Distribution: cosmopolitan.