中国鱼类杆咽属线虫一新种（旋尾目：杆咽科）

A New Species of Rhabdochona from Fish in China (Spiurodea:Rhabdochonidae)

报道寄生在花ＨｅｗｉｂａｒｂｕｓｍａｃｕｌａｔｕｓＢｌｅｅｋｅｒ肠道中的杆咽线虫一新种，即杆咽线虫，新种Ｒｈａｄｂｏｃｈｏｎａｈｅｍｉｂａｒｂｉｓｐ．ｎｏｖ．。标本采自四川省马边县。模式标本保存于宁夏回族自治区水产研究所。

Rhabdochona hewibarbi Wu et Ma sp. now. (fig. 1￣7) Holotype ♂, allotype ♀, paratype 6♂♂, 5 ♀♀, were collected from the intestine of the fish, Hewibarbus maculatus Bleeker in Mabian County (28°49′ N, 103°31′ E), Sichuan Province. The typical specimens are deposited in Ningkia Fisheries Institute, Yingchuan, China.The new species is similar to R. oncorhgnchi (Fujita, 1921 ), but differs from the latter in the following points: 1. the former has 14 teeth in prostoma and the latter has 10; 2.the former has not hasal teeth and the latter has; 3. the former has more than 14 pairs of preanal papillae and the latter has less than 11 pairs of it; 4. the length of left spicule is 0. 274￣0. 290 in the former,and 0. 426 ￣0. 555 in the latter.These distinct characteristics make the new species different from R.oncorhynchi.