Guofa Chen, guofachen@yahoo.com¹, Qing-He Zhang, qing-he@rescue.com², Yanjun Wang³, Guang-Tian Liu⁴, Yongan Bai, n/a⁴, and Jingfu Niu⁵. (1) State Forestry Administration, General Station of Forest Pest Management, 58 Huanghe North Street, Shengyang, China, (2) Sterling International Inc, R & D department, 3808 N. Sullivan Rd, Bldg 16, Spokane, WA, (3) Station of Forest Pest Control, Keshiketeng Qi, Chifeng, Inner Mongolia, China, (4) Baiyinaobao National Natural Preserve, Chifeng, Inner Mongolia, China, (5) Forest Pest Control Station of Chifeng City, Chifeng, Inner Mongolia, China