The Northeast of China, which covers an area of 124'1400 km2, comprises HeiLongjiang, JiLin, LiaoNing province, and northeast of inner Mongolian. The annual mean temperature is 5 centigrade below zero in the north, and 10 centigrade above zero in the south. The annual precipitation range from 300 mm to 1200 mm. Moreover, northeast China is an important forest area in China, and hundreds of forest disease and pests occurred every year. Among these pests, the Lepidoptera account for a big part, accordingly, the research on diversity of Lepidoptera is the basis of taxonomy and pests control. According to 「List of Chinese Insects」(Hua, 2005), there are about 20,692 species in China, and 2,934 in Northeast China, for instance, Noctuidae 1,400 spp. (Hua, 2005), Notodontidae 128 spp. (Hua, 2005), Tortricidae 267 spp. (Hua, 2005), Pyralidae 146 spp. (Hua, 2005), Geometridae 233 spp. (Zheng, 1999), Hesperiidae 54 spp. (Zhou, 2000), Parnassiidae 32 spp. (Zhou, 2000), Papilionidae 26 spp. (Zhou, 2000), Pieridae 59 spp. (Wang, 1998), Nymphalidae 188 spp. (Zhou, 2000), Lycaenidae 150 spp., etc. (Wang, 2002).

• Mu-jie Qi(Division of Life Sciences, College of Natural Sciences, University of Incheon)
• Hui-lin Han(School of Forestry, Northeast Forestry University, Harbin)
• Yang-Seop Bae(Division of Life Sciences, College of Natural Sciences, University of Incheon)