1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P. R. China
2. College of Science, Department of Applied Chemistry, China Agricultural University, Beijing 100193, P. R. China
3. Colleage of Plant Health and Medicine, and Key Lab of Integrated Crop Disease and Pest Management of Shan-dong Province, Qingdao Agricultural University, Qingdao 266109, China