Mass mortality of oak trees has been reported in Korea since 2004. It seemed to be occurred by a possible pathogenic fungus Raffaelea quercus-mongolicae and spread by an ambrosia beetle, Platypus koryoensis (Coleoptera: Platypodidae) which was a vector of that fungus. P. koryoensis attacked healthy or stressed living Quercus mongolica. The numbers of damaged and/or died Q. mongolica by P. koryoensis has increased every year since its first report. The damages caused by Platypus spp. were reported world widely. Pinehole borers P. caviceps, P. apicalis and P. gracilis damaged and killed living southern beech (Nothofagus spp.) and/or Kamawi (Weinmannia racemosa) in New Zealand. The relationship between pinhole bores, the fungal pathogen Sporothrix and their host beech is well established. P. subgranosus was responsible to death of myrtle beech (N. cunninghamii) in Tasmania, Australia. In southern Europe, P. cylindrus attacked cork oak (Quercus suber), and Phytophthora cinnamoni was known as a pathogen. P. mutatus was a primary pest to poplars, especially Populus deltoides in South America. Alfaro et al. warned on the threat of P. mutatus to world poplar resources since its introduction to Italy on 2002. P. quercivorus, a vector of pathogenic fungus Raffealea quercivora was responsible for Japanese Oak wilt disease on Q. crispula and Q. serrata. In this study, we will introduce the current status of oak wilt disease in Korea and integrated control method of this disease

• Il-Kwon Park(Division of Forest Insect Pests and Diseases, Korea Forest Research Institute)