椰子织蛾Opisina arenosella Walker是最近在中国南方发现的一种新的入侵害虫。准确鉴定该虫是开展调查、监测与防治等各项工作的基础。本文对该虫的各个虫态包括卵、幼虫、蛹、成虫以及雄虫外生殖器的形态特征进行了详细描述,并提供了相应的彩色图片,为该虫的准确鉴定提供了依据。 Opisina arenosella Walker is a new invasive pest recently found in southern China. Accurate identification of the pest is the basis for carrying out investigations, monitoring and prevention and other work. In this paper, the morphological characteristics of all the insect pests including eggs, larvae, pupae, adults and male genitalia were described in detail, and the corresponding color pictures were provided, which provided the basis for the accurate identification of the insects.