青厉螨属一新种(蜱螨亚纲:厉螨科)

A NEW SPECIES OF QINGHAILAELAPS FROM QINGHAI PROVINCE,CHINA (ACARI: LAELAPIDAE)

本文记述青厉螨属一新种，穴居青厉螨Qinghailaelapscavicoloussp．nov.，其特征：背板前部的刚毛，包括F2较后面的毛显著粗长；背板周围有一圈不规则的角质增厚区；胸毛粗长，St1末端超过胸板后缘；肛板前线内凹；腹表皮刚毛约25对，中部的毛粗长。模式标本采自青海玛沁县的鸟穴中，保存在南京大学医学院寄生虫学教研室。

Qinghailaelaps cavicolous sp. nov. (Figs. 1-5)Holotype ♀, was collected from a cave of bird, Maqing County (34. 4°N , 100. 1°E )Qinghai Province, in Sept. 1988, and deposited in the Department of Parasitology, Medical School, Nanjing University.This new species tnay be easily differenciated from Qinghailaelaps marmotae Gu et Yang, 1984 and Q. gui Bai, 1992 by the following characters: 1) the dorsal setae on anterioe portion of dorsal plate, including F2,thicker and longer than those on posterior portion of the plate; 2) with an irregular, circuIar sclerotized ring around the dorsal plate; 3) sternal setae thicker and longer, the end of St, extending over the posterior margin of sternal plate;the first pair of lyriform pores situated between St1, near the anterior margin of sternal plate and very close to each other; 4) presternal plate undetected and exopodal plate well developed; 5) anterior margin of anal plate concave;6) the bared venter bearing about 25 pairs of setae, the central ones obviously heavier and longer.