中国西南部谈水鱼类寄生单殖吸虫

Monogenea from Freshwater Fishes of Southwest China

本文记述了四川省西部地区和贵州省东南部地区淡水鱼类寄生的单殖吸虫。文中记述了指环虫属两新种，即鞍形指环虫，新种Ｄａｃｔｙｌｏｇｙｒｕｅｓｅｌｌｉｆｏｒｍｉｓｓｐ．ｎｏｖ．和似杆形指环虫，新种Ｄａｃｔｙｌｏｇｙｒｕｅｂａｃｉｌｌｉｆｏｒｍｉｓｓｐ．ｎｏｖ．。新种的模式标本保存于重庆师范学院生物系。

The survey of 43 species of Monosenea from Guizhou Province and two new spoies ofDactylogyrus from Sichuan Province.is reported in this paper.Measurements are in millimeters .Allspecies are deposited in the Department of Biology. Chongqing Teachers College. 1.Dactylogyrus selliformis sp .nov.(fig.1)Host. location .locality. Gill of Hemicullerella sauvagi Warpachowsky. Emei River(Suji Town,Leshan County. Sichuan Province). Small worm.0.450～0;451 in length and0.162～0.164 in width.Marginal hooklets0.021～0;035 in length.Total lengthof anchors 0.036～0.037,of basal portion 0.033～0.034. of point0.010～0.011. of inner root 0.011～0.012 . of outer root 0.003～0.004.Ventral bar saddie- shaped. 0.032～0.033×0. 004～0.005. dorsal bar hat- shaped. 0.030～0. 032× 0.003. Copulatory tube 0. 022～0.023 in length and 0.005 in bel diameter. supporting apparatus0.023～0.025 in length. D.selliformis is colsely similar to D. concavusiformis Zhao et Ma. 1991. but it deffers from thelatter by having saddle-shaped ventral bar. hat- shaped dosaal bar and hook-form copulatory tube. 2.Dactylogyrus bacilliformis sp.nov,(fig.2)Host。location and locatity. Gill of Hemiculterella sauvagi Warpachowsky. Enei River(SujiTown.Leshan county. Sichuan Provce). Small worm. 0.368～0.410 in length and0.190～0.200 in width.Marginal hooklets0.014～0.020.central hooks.total length 0.033～0.035. basal portion 0.021～0.022. point0.010～0.011 . outer root 0.003 . inner root 0.015～0.016. connective platerod-shaped. 0.030～0.031×o.006。Copulatory tube 0.01 8 in length and 0. 005 in diameter. supporting apparatus simple 0.01 3 inlength. This new species is similar to D. grosdevi Gussev. 1955.but it thstinguished from the latter by itsouly one red- shaped connective bar and a simple thin stripe-like supporting apparatus.