1. Bolu Regional Forestry Directorate Bolu Turkey
2. Forest Entomology and Protection Unit Department of Forest Engineering Faculty of Forestry İzmir Kâtip Çelebi University İzmir Turkey
3. Kansai Research Center Forestry and Forest Products Research Institute Kyoto Japan
4. Forest Entomology and Protection Unit Department of Forest Engineering Faculty of Forestry Düzce University Düzce Turkey