The Key Laboratory of Forest Protection,State Forestry Administration,Research Institute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry,Beijing 100091,China;
The Key Laboratory of Forest Protection,State Forestry Administration,Research Institute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry,Beijing 100091,China;
Guangang Forest Park,Tianjin 300274,China;
Guangang Forest Park,Tianjin 300274,China;
emerald ash borer; Spathius agrili; emergence; oviposition; ecological relationship; biological control;