烟夜蛾(Heliothis assulta Guenee)又叫烟青虫,是棉铃虫的一个近缘种,二者在形态、生活习性等方面有许多相似的地方,在进行棉铃虫的大田调查和发生期预测时,容易因二种的混淆而造成误差,为此,我们于1973年在上海县北桥对烟夜蛾的主要寄主,大田消长以及形态特征作了些观察,以与棉铃虫进行比较。 Heliothis assulta Guenee, also known as tobacco budworm, is a relative species of cotton bollworm. Both of them have many similarities in morphological, living habits and other aspects. During the field investigation and prediction of the occurrence of cotton bollworm, Easily confused with the two caused by errors, therefore, we in 1973 in North Bridge in Shanghai County of the main host of tobacco night moths, field growth and shape characteristics made some observations to compare with the bollworm.