尖翅小卷蛾Bactra lancealana (Hubner),是为害席草的主要害虫之一.它的幼虫蛀食草茎的髓部,使草茎折断枯黄,席草受害后,一般损失达三成. 尖翅蛾在我省一年发生6～7代,以第一代、第二代为害最烈,本文对其形态特征、生活习性,发生与环境的关系,预测预报方法及防治措施等都作了较为详细的记述。 Bactra lancealana (Hubner), one of the major insect pests of the herbaceous grass, whose larvae moth herbaceous stems of the Ministry of the stem, so that the grass stem broken yellow, after the grass victims suffer, the general loss of up to 30% Moths in our province occurred 6 to 7 generations a year, with the first generation, the second generation is the hardest hit, this article on its morphological characteristics, habits, the occurrence of the relationship with the environment, prediction and forecasting methods and prevention measures are made more Detailed description.