Parapoteriostomum euproctus
(Boulenger, 1917) Hartwich, 1986

Figures

Synonyms: Cylichnostomum euproctus Boulenger, 1917; Cylicostomum euproctus (Boulenger, 1917) Ransom and Hadwen, 1918; Trichonema euproctus (Boulenger, 1917) LeRoux, 1924; Cylicodontophorus euproctus (Boulenger, 1917) Cram, 1924

General: Medium-sized Cyathostominea. Posterior edge of MC anterior to edge of BC. ELC elements more numerous (38-40) than elements of ILC (30-34). ILC more than twice as long as ELC. Insertion point for posterior ends of elements of ILC about 1/4 of BC depth laterally and 1/3 to ½ ventrally and dorsally. Dorsal gutter completely absent. Esophageal funnel shallow.

Male: Body length 6.75-7.3 mm. Esophagus length 360-420. BC width 75-100, depth 28-40. Distance from anterior deirids and excretory pore to head end 360-500. Spicules length 1,36-2,24 mm. Gubernaculum length 160-230. Dorsal ray length 300-320. Dermal collar poorly developed on proximal part of ventral side of genital cone. Appendages of genital cone consist of paired, middle-sized, fingershaped protrusions expanded proximally. Protrusions of dermal collar absent.

Female: Body length 6-9.5 mm, length of esophagus 360-410, width BC width 72-105, depth 28-40, vagina length — 0.360-0.400 (0.400-0.460), distance from vulva to tail tip 0.300-0.400. from anus to tail tip — 0.190 -0.250. Egg size 0.080-0.100x0.050-0.060. Tail of mature females straight, tip sharply pointed

Hosts: Equus caballus, E. asinus, E. caballus X E. asinus, E. przewalskii, E. hemionus, E. burchelli?

Locality: cecum, colon.

Distribution: cosmopolitan.