青海犹伊螨属一新种(蜱螨亚纲:犹伊螨科)

A NEW SPECIES OF THE GENUS EVIPHIS (PARASITIFORMES: EVIPHIDIDAE)

本文绘图描述了根田鼠犹伊螨新种Eviphis oeconomus sp.nov.,并讨论了与喜马拉雅犹伊螨E.himalayaensis Ma et Piao,1981的鉴别特征。模式标本采自青海久治县的根田鼠Microtus oeconmus Pallas体上,存放在青海省地方病防治研究所。

Eviphis oeconomus sp. nov. (figs, l-6)The new species is similar to Eviphis himalayaensis Ma. et Piao, 1981, however there are differences between them: Idiosoma oval in shape, measuring 570×440μm. Dorsal setae 28 pairs in number, seta Ⅰ absent, Sc slender and shorter than M, Ⅴ and S, D3 stouter and longer than other D'S. MSt and Ⅵ shorter and stouter than St1-3, and St2 the longest. Geniti-ventral plate concaved laterally, and its posterior end expanded.Holo:ype ♀, collected on 28. Ⅴ. 28. 1985, off Microtus oeconomus pallas, from Jiuzhi County (32.3°N, 101-1°E), Qinghai Province, deposited in the Research Institute of Endemic Disease Control, Qinghai Province.