1. Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan, P. R. China;
2. Key Laboratory of Integrated Pest Management on Crops in Southwest, Ministry of Agriculture, Chengdu, Sichuan, P. R. China;
3. College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, Sichuan, P.R. China