双尾白舟蛾(Dicranura erminea Esp.)属鳞翅目舟蛾科(Notodonlidae),为杨树的一种食叶害虫。此虫在国外分布于欧洲北部、中部及西伯利亚南部,在国内仅知分布于新疆。近几年来,此虫在奇台危害日趋严重,林业生产受损很大。新疆八一农学院张学祖教授1963年曾述及其形态,但未提及生活史。现将我们对此虫的多年观察结果报道于下。 Dicranura erminea Esp. Belongs to the genus Notodonlidae, which is a leaf-eating pest of poplar. This insect is distributed abroad in northern Europe, central and southern Siberia, known only in the country located in Xinjiang. In recent years, the pests have become more and more dangerous in Qitai and the forestry production has been greatly damaged. Professor Zhang Xuezu from Bayi Agricultural College in Xinjiang described his form in 1963, but did not mention life history. The results of our many years of observations of this worm are reported below.