An investigation on the habitation of Callipogon relictus Semenov was carried out in Gwangneung forest, Korea and Ussurisky nature reserve, Russia. During the investigation period (2007–2018), a total of 25 emergence holes, 10 pupal chambers, 10 adults, and two larvae of C. relictus were identified in Gwangneung forest. In this presentation, we provide biological information on habitation of C. relictus in Gwangneung forest by comparison and combination of survey results in Ussurisky nature reserve, in 2015 and 2018. In addition, the distribution range of C. relictus is also reviewed in the Korean Peninsula with a new location.

• Seung-Gyu Lee(Division of Forest Biodiversity, Korea National Arboretum)
• Cheolhak Kim(Biological Resource Research Center, Osang K-insect)
• Alexander V. Kuprin(Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far East Branch of the Russian Academy of Sciences)
• Jung-Hoon Kang(National Research Institute of Cultural Heritage)
• Bong-Woo Lee(Division of Forest Biodiversity, Korea National Arboretum)
• Seung Hwan Oh(Division of Forest Biodiversity, Korea National Arboretum)
• Jongok Lim(Division of Forest Biodiversity, Korea National Arboretum)