四川省鲴亚科鱼类寄生指环虫属两新种的记述

NOTES ON TWO NEW SPECIES OF DACTYLOGYRUS FROM XENOCYPRINNIAE FISHES IN SICHUAN PROVINCE

本文记述了采自渠江(四川省渠县临巴镇)的宜宾鲴Xenocypris fangi(Tchang)鳃上的指环虫Dactylogyrns两新种。即舌茎指环虫,新种Dactylogyrus loricirrus sp.nov和华莹指环虫,新种Dactylogyrus hauyingensis sp.nov.

Two new species of Dactylogyrus are found on the gills of Xenocy pris fangi (Tchang). Holotypes are deposited in the Department of Biology, Chongqing Teachers College. The diagnoses of the new species are as follows: 1. Dactylogyrus loricirrus sp. nov. (fig.1) Minute worm. Central large hooke of D, wunderi type, with one connective bar. Supporting apparatus ligulate-shaped. It differs frem the Dactylogyrus alatceirrus Gussev, 1955 by as above, (fig.2) 2. Dactylegyrus hauyingensis sp. nov. Minute worm. The new species most resembles Dactylogyrus ornithopotius Tchang, 1955 and D. follicirrus Gussev, 1955, but it differs from D. orritho-podus Tciumg, 1965 in having one connective bar and the dimension of copul-atory organ, and from D. follicirrus Gussev, 1955 in the shape of connective bar and the strucsure of copulatory organ.