The Genus Greenidea includes 66 species worldwide. Only two species have been recorded in Korea: G.kuwanai and G.nipponica. We collected Greenidea nigra Maki, 1917 on Quercus glauca in Jeju. This species has been recorded in Japan and Taiwan. In this study, we report this species for the first time in South Korea, and describe morphological features of apterous viviparous females.

• Yejin Kang(Department of Plant Medicine, Gyeongsang National University)
• Wonhoon Lee(Department of Plant Medicine, Gyeongsang National University, Institute of Agriculture & Life Science, Gyeongsang National University)