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ban kou shu xian chong yi xin zhong ( yuan xing mu : mao yuan ke )
Pages: 225-229
Year: Issue:  3
Journal: Acta Zootaxonomica Sinica

Keyword:  圆形目新种寄生线虫交合刺寄生蠕虫动物分类学宁夏回族自治区中卫县兽医工作宁夏中卫;
Abstract: This article dealt with a new species of Epomidiostomum from the domestic duck's gizzard (Anas platyrhychos domestica), which was found in the Zhongwei county, Ningxia Hui Autonomous Region.Epomidiostomum zhongweiense sp. nov. (figs. 1-6)The characteristics of the new species are:1.Head bearing 4, petalr-like projections (2 sub-dprsals and 2 sub-ventrals), each with 3-4 small teeth in the free end.2.External dorsal rays unequal in length left 0.731-0.0850 mm and right 0.0635-0.0714mm.3.Dorsal ray slender, 0.0816-0.0918 mm in length and divided distally into 2 branches, each branch redivided into 2 small branchlets, the outer two longer than the inner:4.Spicules one pair, equal in size and similar in shape, 0.1258-0:1394 mm in length, 0.0200-0.0280 nun in width, with a button-like structure in the proximal end. Slightlly above the middle part (0.0612-0.0646mm from the proximal end) the spicules divided into 3 branches; dorsal with sharp terminal, .0.0546-0.0578mm in. length, medio-ventral 0.0542-0.0578 mm in length, branched off at end and latero-ventral 0.0646-0.0748 mm in length, with 3 small flat topped knots in the distal end.5.No gubernaculum 6.Female body narrows rapidly behind the anus and bent ventrally. 7.Vulva slit-shaped with, ligule-like protruded.8.Combined length of the ovijectors and sphincters 0.3670-0.5060 mm.9.Ova in uterus 0.0680-0.0714 mm long and 0.0374-0.0476 mm in diameter.The new species is closely related to Epomidiostomum anatinum and Epomidiostomum sub-quadratum, but the number of small teeth in the free end of the petal-like projection and shape of external dorsal ray and spicules are unlike.The difference of the new species from the two closely related species is given in Chinese text.Holotype ♂, allotype ♀, paratypes 5♂♂ 6♀♀, all types are deposited in the Zhongwei. Ve-terinaly (37°N. 105°E)Station, Ningxia.
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