This study was conducted to surveyed the community structure of insects on thirty varieties of Hibiscus syriacus in Busan and Suwon, Korea. In addition, seasonal changes and damage rates of major insect pest species were investigated. Insect pests were visually observed from the area of H. syriacus plantations. As a result, 16 species belonging to 9 families of 4 orders were observed, while 13 species were classified to insect pests. Among insect pests, hemipterans (6 species) and lepidopterans (4 species) were most diverse groups. During summer season, Rehimena surusalis (Lepidoptera: Crambidae) and Haritalodes derogate (Lepidoptera: Crambidae) were damaged to flower buds and leaves, respectively. In September, nymphs and adults of Plautia stali (Hemiptera: Pentatomidae) were found from flower buds and leaves.

• Mannyun Kim(Forest Diseases and Insect Pests Division, National Institute of Forest Science)
• Jong-Kook Jung(Forest Diseases and Insect Pests Division, National Institute of Forest Science)
• Sang-Hyun Koh(Forest Diseases and Insect Pests Division, National Institute of Forest Science)