Cylicocyclus adersi (Boulenger, 1920)
Ershov, 1943

Figures

Synonyms: Cylicostomum adersi Boulenger, 1920; Trichonema adersi (Boulenger, 1920) LeRoux, 1924

General: Posterior edge of MC situated anterior to edge of BC. Amphids projects slightly above MC surface. Tip of submedian papillae bullet-shaped, short. Stalk of submedian papillae longer than broad. ELC markedly less numerous (30 against 60 ) and aproximately twice longer than elements 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. Buccal cavity wider posteriorly. Dorsal gutter button-like. Esophageal funnel greatly enlarged. Excretory pore posterior to NR. Anterior deirids near middle of glandular esophagus

Male: Body length 12.5-14.0 mm. Esophagus length 600-660. BC width 140-160, depth 60-72. distance from anterior deirids to head end about 687, from excretory pore 552-653, from nerve ring 331-429. Spicules harpoon-shaped, their length 1.2-1.4 mm. Gubernaculum length 260-311. Dorsal ray length 675-750. Ventral rays length equal to laterals. Dermal collar poorly developed on ventral surface of genital cone. Appendages of genital cone are oval plates with four fingershape protrusions, frequently bifurcated distally, fused medially. Protrusions of dermal collar present.

Female: Body length 14-16 mm, length of esophagus 640-720, BC width 140-160, depth 60-72. distance from anterior deirids and excretory pore to head end 0.600-0.650, distance from vulva to anus 366-427, from anus to tail tip 195-214, vagina length 0.95-1.3 mm, egg size 80- 88x36-40.

Hosts: E. asinus, E. burchelli antiquorum, E. zebra zebra

Locality: cecum, colon.

Distribution: Africa