A redescription of Cylicocyclus adersi Boulenger, 1920 (Nematoda: Strongyloidea: Cyathostominae) parasitic in equids.
As part of a revision of the systematics of the Cyathostominea of equids, we determined that the single type-specimen of Cylicocyclus adersi Boulenger, 1920 is missing and a modern description of this rare species parasitic in donkeys Equus asinus L. and zebras E. burchelli (Gray) and E. zebra L. is not available. Systematists at a workshop on the systematics of the Cyathostominea of horses, convened on August 11, 1997 in Sun City, South Africa, listed C. adersi as a species inquirenda . Herein, we provide a redescription of C. adersi and propose a neotype for the species. The distinctive shape of the buccal capsule of C. adersi , with a relatively tiny 'hoop-like thickening' at its base, a relatively small oesophageal funnel with a thick cuticular lining, and a short, but distinct, dorsal gutter readily distinguishes this species from other large species of Cylicocyclus Ihle, 1922.
I.I. Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, vul. B. Khmelnyts'kogo, 15, Kiev, 01601, Ukraine.
Vitaliy A
VA
Kharchenko
J Ralph
JR
Lichtenfels
Patricia A
PA
Pilitt
Rosina C
RC
Krecek
D000818:Animals; D018397:Equidae / Q000469:parasitology*; D005260:Female; D008297:Male; D008857:Microscopy, Interference; D013019:South Africa; D013320:Strongyloidea / Q000033:anatomy & histology* / Q000648:ultrastructure; D015030:Zimbabwe