Assessments were made of fumigant and contact toxicities of 6 Myrtaceae plant essential oils (EOs) and their components against spotted wing drosophila (SWD), Drosophila suzukii (Matsumura) (Diptera: Drosophilidae). Median lethal dose (LD50;mg/L) values of Leptospermum citratum EO for fumigant activity were 2.39 and 3.24 for males and females, respectively. All tested EOs except Kunzea ambigua EO exhibited effective contact toxicity. LD50(μg/fly) values for contact toxicity of manuka and kanuka were 0.60 and 0.71, respectively, for males and 1.10 and 1.23, respectively, for females. β-Triketone fractions, composed of flavesone, isoleptospermone and leptospermone, exhibited efficient activity with the LD50 values of 0.13–0.37and0.22–0.57μg/fly for males and females, respective

• Junheon Kim(Forest Insect Pests and Diseases Division, National Institute of Korea Forest)
• Miyeon Jang(Division of Applied Life Science (BK21+ Program) Gyeongsang National University)
• Eunsik Shin(R&D Bio Team, Agrigento Co., Ltd)
• Chung Gyoo Park(Division of Applied Life Science (BK21+ Program) Gyeongsang National University Institute of Agriculture and Life Science, Gyeongsang National University)