青海省寄生螨类的区系分布

根据建国以来的大量研究调查资料，对青海地区已记载的寄生螨类（主要包括革螨、恙螨）计10科33属100余种进行了初步的区系分布、数量与宿主关系的探讨。（1）河湟谷地小区1]：计有45种，主要有：赛氏血革螨、秉氏血革螨、旱獭青厉螨、毒厉螨、鼠兔赫刺螨、褪色巨螯螨、似田鼠新恙螨、旱獭新恙螨等；（2）柴达木盆地小区：计有15种，具代表性种类为乌兰纤恙螨；（3）祁连青南小区：计有85种，具代表性种类为久治真棒恙螨、玉树羽叶恙螨和朱雀禽棒恙螨；（4）羌塘高原小区：计有3种，皆为血厉螨属种类。

The fauna of the parasitic mites in Qinghai Province

The investigations and collections of parasitic mites in Qinghai province have made since 1950s. Up to the present, more than 100 species of parasitic mites (including the trombiculid mites and the gamasid mites), belonging to 33 genera and 10 famillies were found in this ares. A systematic discussion on the geo-graphical distribution, quatity of the mites and the relationship between mites and their hosts has been con-ducted on the large number of the research results in four zoogeographical infra-regions :1. He-huang valley infra-region:there are 45 species of mites. The representive species of mites are:Haemogamasus serdjukouae, H. pingi, Qinghailaelaps marmotae, Laelaps echidninus, Hirstionyssus ochotonae,Macrocheles decoloratus, Neotrombicula microtides, N. marmotae.2. Qaidam basin infra-region: there are 15 species of mites. Only the Leptotrombidium wulanensis is the representive species.3. Qilian-qingnan infra-region:there are 85 species of mites. The representive species are Euschoengastis jiszhiensis, Tronbiculindus. (Plumosicola) yushuensis and Ornithogatia erythrinae.4. Qiangtang Plateau infra-region:there are 3 species of mites. All of them belong to Haemogamasus.