A new stomach worm,Obeliscoides pentalagi n. sp. (Nematoda; Trichostrongyloidea) of Ryukyu rabbits,Pentalagus furnessi (Stone, 1900) |
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| Authors: | S. -I. Fukumoto |
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| Affiliation: | (1) Department of Parasitology, Faculty of Veterinary Medicine, Hokkaido University, N-18 W-9, 060 Sapporo, Japan;(2) Present address: Laboratory of Veterinary Parasitology, Department of Veterinary Medicine, College of Dairying, 582 Bunkyodai-Midorimachi, 069 Ebetsu, Japan |
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| Abstract: | Summary A new trichostrongylid nematode, Obeliscoides pentalagi n. sp., from the stomach of the Ryukyu Rabbit, Pentalagus furnessi, collected on Amami-ohshima Island, south Japan is described. O. pentalagi n. sp. resembles O. leporis Schulz, 1931 and O. travassosi Liu & Wu, 1941, but differs in the relative size and morphology of the dorsal ray and genital cone of the males. The number and distribution of longitudinal cuticular ridges of O. pentalagi n. sp. is similar to those of O. cuniculi multistriatus Measures & Anderson, 1983, but it differs in the morphology of the spicules, dorsal ray and genital cone in males, and in the morphology of the prevulval lobe of the females. The discovery of O. pentalagi further supports the hypothesis of a Eurasian origin of the genus Obeliscoides (Graybill, 1923) Graybill, 1924 (Durette-Desset, 1983; Durette-Desset & Chabaud, 1977; Measures & Anderson, 1983a, b, c, 1984). The number and distribution of longitudinal cuticular ridges and variation of the prevulval lobe in females of O. leporis Schulz, 1931 are also examined and compared with those of other species. |
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