Study On Spider Ares Department From Grassland Of Gansu Province

Gansu province is between the Palaearictic and Oriental,as well as at the interface of the Central China,North China, Mongolia-Xinjiang and Qinghai-Tibet district. The grassland ecosystem is difference from the farmland ecosystem , which make it be more propitious to naturalenemy's use.So,the Study on spider ares department from grassland of Gansu province is very important. There are 259 species spider in all included in this article,which is subordinated to 21 family 92 genia and 110 species of them are new records of Gansu. The spider ares department was discussed and compared with other place above it for the first time.