Cyathostomum alveatum Looss, 1900

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Synonyms: Cylichnostomum alveatum (Looss, 1900) Looss, 1902; Cylicostomum alveatum (Looss, 1900) Gedoelst, 1903; Cylicocercus alveatus (Looss, 1900) Cram, 1924; Trichonema alveatum (Looss, 1900) Yorke and Maplestone, 1926; Erschowinema alveatum (Looss, 1900) Tshoijo, 1957.

General: ELC consists of about 29 elements; IlC about 90. Tips of elements of ILC pointed. Insertion point for posterior ends of elements of ILC about 1/5 of BC depth. ILC inserted in convex line in lateral view. Support for ELC continuous with BC. Junction of support (S) for ELC and wall of buccal capsule (BC) without narrow constriction. S much smaller than wall of BC. S and wall of BC of similar height laterally, dorsally and ventrally. Excretory pore and anterior deirids near middle of glandular esophagus, 360-390 from anterior end.

Male: Body length 10.0-10.5 mm. Esophagus length 660-800, width 150. BC width 48-54, depth 48-54. Spicules length 1.75-2.39 mm. Gubernaculum length 248-262. Dorsal ray length 560-620. Ventral rays length longer than laterals. Appendages of genital cone cylindrical, slightly divergent in different sides; their distal ends elongated into rods with rounded ends. Protrusions of dermal collar absent.

Female: Body length 10.5-13 mm. Esophagus length 660-800, width of BC 68-100, depth 54-70, distance from vulva to anus 70-80, from anus to tail tip 70-80, egg size 80-90 x 40-49.

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

Locality: cecum, colon.

Distribution: cosmopolitan.