Escape pattern of the ambrosia beetle Platypus koryoensis (Murayama) based on individual gallery was investigated. The survey was conducted in four oak forests located in Chuncheon, Hanam, Paju and Seongnam, and escape patterns from individual gallery were surveyed using emergence trap attached at the entrances of galleries formed in 2010. The number of adults caught in each trap was periodically counted from May 2011 to September 2012. The adults ambrosia beetle was caught over two years after infestation. The escape patterns in the first and second year after infestation showed different types; in the first year, escape of adults from gallery was observed one or two times whereas escape from gallery was observed two times in the second year with variation in aspect of escape density and timing. Moreover, variations in escape pattern between trees or between galleries in the same tree was observed. Colonization success rate in living tree was higher than that of dead tree, but the number of progeny per gallery in living tree was lower than that of dead tree. Colonization success rate in the galleries of second year was lower than that of first year, but the number of progeny per gallery of second year was higher than that of first year.

Apple borers such as oriental fruit moth (OFM) Grapholita molesta (Busck) (Lepidoptera: Totricidae), and peach fruit moth Carposina sasakii Matsumura (Lepidoptera: Carposinidae) can reduce the yield and its quality if not managed properly. Even peach fruit moth infestation in harvested apple could produce quarantine problem in exportation. We investigated the temporal distribution of apple borers infestation in an apple orchard where the infestation level of fruit was around 95% from September to early December, 2010. Every week, 150 apples were harvested from the apple orchard in Giran, Andong, Korea and 50 apples were cut to monitor the number of larval infestation. At the same time another 100 apples were kept in plastic container inside and outside the laboratory 50 each to check the escape of the infested larvae for overwintering cocoon formation. All larvae collected were identified based on the morphology and also verified by DNA sequence. The study indicates that the numbers of the infested larvae increased from September to October second week and then slightly decreased until early December with similar number of holes per apple. The holes produced by the escaping larvae were mostly found on dorsal side of the apple, but less on basal portion. Most of the infested larvae escaped from apple during late October to early November. Based on morphological characters such as anal comb, crocket and pupation shelter, the collected larvae were identified. 42.31% of larvae were G.molesta, 52.59% of larvae were C.sasakii and 5.10% were other species not identified.