青海省血革螨属一新种(蜱螨亚纲:血革螨科)

A NEW SPECIES OF THE GENUS HAEMOGAMASUS FROM QINGHAI PROVINCE,CHINA (ACARI:HAEMOGAMASIDAE)

本文对采自喜马拉雅旱獭洞的血革螨属一新种──玉树血革螨Ｈａｅｍｏｇａｍａｓｕｓｙｕｓｈｕｅｎｓｉｓ ｓｐ．ｎｏｖ．的形态特征进行了详细描述，并与近似种湟中血本螨Ｈａｅｍｏｇａｍａｓｕｓｈｕａｎｇｚｈｏｎｇｅｎｓｉｓ ＹａｎｇｅｔＧｕ进行了比较。

Haemogamasus poshuensis sp. nov. (figs. 1-4)The new species is similar to Haemogamasus huangzhongensis Yang et Gu 1986,but can be distinguished from the latter by the following characters: both anterior and posterier margins of the sternal plate are concave in the new species while in the latter only the anterior margin is concave; the 5 pairs of setae on the genite-ventral plate are smooth in the new species, while those are plumose in the latter; the setae on legs of the new species are plumese and smooth, whereas the setae on legs of the latter are plumose; the shape of the pilus dentilus in the new species is stout at the hasal part,while that in the latter is setaceous; the peritreme of the new species reaches the posterier margin of the leg Ⅰ, while that of the latter reaches the anterior margin of leg I.Holotype ♀, paratype 1 ♀ were collected from a hole of Marmota himalayana Hodgson in Yushu County(96°20＇N, 32°15＇E), Qinghai Province on Jun. 13, 1981. All types are deposited in the Sanitary and Antiepidemic Station of Liaoning Province.