棉铃虫是棉花主要害虫之一。去年郊区大发生,为害严重。为了便于广大群众识别,及时进行防治,现将其形态特征简要介绍如下:棉铃虫属于鳞翅目、夜蛾科,它的一生有四个虫态:(一)成虫:棉铃虫成虫体长约十七毫米,翅展约三十五毫米,前翅中部稍近前缘处,有一暗褐色环状纹与肾状纹,外缘部有七个小黑点,中部稍近外缘部, Cotton bollworm is one of the major cotton pests. The outbreak took place in the suburbs last year, causing serious damage. In order to facilitate the masses to identify and timely prevention and control, the morphological characteristics are briefly described as follows: The cotton bollworm belongs to Lepidoptera, Noctuidae, its life has four insect states: (A) adult: Helicoverpa armigera adult body length Seventeen millimeters, wingspan of about thirty-five millimeters, near the leading edge of the central front of midwinter, there is a dark brown ring pattern and kidney pattern, the outer edge of seven small black spots, the central margin of the outer margin,