中国囊螨属一新种(蜱螨亚纲:囊螨科)

A NEW SPECIES OF THE GENUS ASCA FROM CHINA (ACARI: ASCIDAE)

本文记述囊螨属Asca V.Heyden的一个新种中华囊螨Asca sinica sp.nov.,其特征:前后背板刚毛除S_8外,其它均呈镰状或桨状;St_1位于胸板外,胸扳前缘与第1对隙孔近平直;生殖板之后具一长的小骨片;腹肛板前缘略凸,周肛毛6对,最后2对镰状。模式标本采自宁夏回族自治区海原县,蚂蚁Myrmos sp.洞道及巢穴内,保存于宁夏回族自治区地方病防治所。

Asca sinica sp. nov. (figs. 1-5)The new species is similar to Ascc sculp trata Aoki, but may be distinguished by the following characters: 1) all dorsal setae of the new species sickle-like or paddle-like except S8, that of the latter species needle-lite; 2) St1 off the sternal plate and anterior margin of the plate closely near the 1st pair of lyriform pores in the new species, while that St1 on the plate and a certain distance between anterior margin and lyriform pores in the latter species; 3) behind the genital plate with a slender platelet in the new species, while that with 2 pairs of platelets in the latter species; 4) anterior margin of ventroanal plate convex, and 6 pairs of setae on the plate, the posterior 2 pairs of setae sickle-like in the new species, while the anterior margin of ventroanal plate flat and all 6 pairs of setae on the plate simple in the latter species.Holotype ♀and paratype 1♀ were collected from the tunnels and nests of Myrmos sp., on June 9 and 12, 1988, from Haiyuan County (36.5°N, 105.6°E), Ningxia Autonomous Region, by Bai Xue-li, and deposited in the Institute of Endemic Disease Control, Ningxia Hui Autonomous Region, Yinchuan.