中国西部下盾螨属一新种(蜱螨亚纲:厉螨科)

A New Species of the Genus Hypoaspis from Western China(Acari: Laelapidae)

本文记述厉螨科LaelapidaeBerlese，1892下盾螨属HypoaspisG．Canestrini，1885一新种，命名为青海下盾螨Hypoaspisqinghaiensissp．nov。模式标本采自青海省同德县巴水乡的长尾仓鼠Cricetuluslongicaudatus体，新种与下盾螨HypoaspisscrecisLi，ZhengetYang，1996接近，但新种螨体小，背板毛短可与后者相区别。本文量度单位均为um。

Hypoaspis qinghaiensis sp. nov. could be described as Fig 1 ).The present new species was allied to Hypoaspis sorecis Li. Zheng et Yang, l996, but different from thelatter in the following characters (corresponding conditions of H. sorecis in parentheses ): (1) The body ofmite smaller, dorsal shied 502 long and 333 wide (600 ×450); (2) Except setae F, -F, and ET1, the setae ondorsal shield shorter, D4 = 28 μm (longer, D4 = 51 μm); (3) Posterior margin of genito -ventral shield exceeding the level of setae VI 3 (not reaching to the level of setae VI3 ); (4 ) Setae Ad lying behind the middlelevel of anal opening (lying the posterior margin of anal opening); (5) Peritrematic shield narrow (wider).Types: Holotype ♀4 and 3 ♀♀ paratypes were collected off Cricetulus longlcaudatus (Milne-Edwards ),1867 on Sept. 10, 1993, from Tongde county (elev. 3 400m ), Qinghai province. The types are deposited inQinghai Institute for Endemic Disease Control and Research.