This study was conducted to investigate the occurrence patterns of sporadic and major insect pests in Gyeonggi Province Area. Lantern fly (Lycorma delicatula) damages to reduce the yield and quality of commodities in grape orchard begin to emergence from the early May, and new adults have appeared from the middle July lay eggs till the early November. The hatchability of eggs laid in last year was influenced by the extremely low temperature (especially -20℃ and under) in over-wintering season. Sweet-potato whitefly (Bemisia tabaci) is widely distributed in the southern part of gyeonggi province, and the biotype of most regional populations is Q-type except the partial Goyang area population (B-type). Potato tuber moth (Phthorimaea operculella) had been reported firstly in 2009 expanded and was confirmed in the northern part of gyeonggi province in 2010. Citrus flatid planthopper (Metcalfa pruinosa), becoming an issue in Korea, have been detected apple (Paju), pear (Yongin, paju), grape (Paju) orchards in 2010.

• Young Su Lee(Gyeonggi-Do Agricultural Research & Extension Services, Environmental Agriculture Research Div.)
• Jin Young Kim(Gyeonggi-Do Agricultural Research & Extension Services, Environmental Agriculture Research Div.)
• Soon Sung Hong(Gyeonggi-Do Agricultural Research & Extension Services, Environmental Agriculture Research Div.)
• Gyoung Joong E(Gyeonggi-Do Agricultural Research & Extension Services, Environmental Agriculture Research Div.)
• Sung Ki Kim(Gyeonggi-Do Agricultural Research & Extension Services, Environmental Agriculture Research Div.)