1 Key Laboratory of National Forestry and Grassland Administration on Management of Forest Bio-Disaster, College of Forestry, Northwest A&F University, Xianyang 712100, China.
2 Department of Entomology, Rutgers, The State University of New Jersey, Bridgeton, NJ 08302, USA.
3 Institute for Biological Control, Julius Kühn Institute (JKI)-Federal Research Centre for Cultivated Plants, 69221 Dossenheim, Germany.