Abstract: 【Objective】 Study the occurrence pattern of Asian gypsy moth(Lymantria dispar asiatica)in different types(tree species)of forest stands and the effect of different meteorological factors on trap catches.【Method】Sticky wing traps baited with the synthetic sex pheromone(+)-disparlure were tested in five types of forest stands in Harbin City, China.【Result】 Our results showed that traps baited with(+)-disparlure in the elm(Ulmus pumila), birch(Betula platyphylla), Mongolian oak(Quercus mongolica), Mongolian Scotch pine(Pinus sylvestris var. mongilica), and Dahurian larch(Larix gmelinii)stands captured a total of 34, 30, 29, 9 and 15 L. dispar asiatica males, respectively. The numbers of male moths captured in the elm, birch and Mongolian oak stands were significantly higher than those in the other two types of stands(P<0.05, n=3). The first trap catches of L. dispar asiatica males occurred in the elm stand, and trap catch peaks appeared earlier in the elm, birch and larch forest stands than in the pine and Mongolian oak forest stands. The trap catches stopped almost at the same time for all five stands. Meteorological factors had a significant effect on the number of L. dispar asiatica males captured. At wind speed level Ⅲ(3.4-5.4 m/s)or higher, the trap catches were significantly lower than those at wind speed levels Ⅰ-Ⅱ(0.3-3.3 m/s). The daily maximum and minimum temperatures both affected the captures; based on a linear relationship between the temperatures and the average daily male moth captures, the trap catches increased with rising daily minimum temperature within the range of 14-23 ℃. When the highest temperature of a day was between 20 ℃ and 35 ℃, the relationship between the trap catches and the maximum temperature was consistent with a parabola. The number of trapped insects increased with rising temperature and reached its peak at 28 ℃, then the number exhibited a declining tendency.【Conclusion】 In conclusion, the occurrences of the Asian gypsy moths were affected by the host plant species, wind speeds, and temperatures in the forests. The number of male Asian gypsy moths captured in the elm stand was the largest and that in the Mongolian Scotch pine stand was the lowest. Excessive wind speed levels lead to a significant reduction in trap catches. Daily maximum temperatures in the 26-30 ℃ range seemed to be optimal for male flight activities.