前言金斑夜蛾 Plusia festucae L.属鳞翅日夜蛾科金翅夜蛾亚科,分布于中国,日本、朝鲜、印度等国,是水稻的一种食叶害虫。在日本的东京、九州、四国、北海道都有发生。其中东京地区每年6月下旬左右田间易见群集为害分蘖盛期的稻叶,胡淼(1980)报导,该虫在我国江苏省徐州地区赣榆县第一代危害水稻的程度超过稻苞虫和稻螟蛉,成为当地水稻主要食叶害虫。一濑(1962)研究了东京地区多种金翅夜蛾亚科害虫,曾报告其中的大多数种类无 Introduction Leptospira spp. Plusia festucae L. is a genus of the genus Diptera, a species of rice leaf pests distributed in China, Japan, North Korea and India. In Japan, Tokyo, Kyushu, Shikoku, Hokkaido have occurred. Among them, rice leaves are most likely to be clustered during the tillering stage in the field around Tokyo in late June each year. Hu Miao (1980) reported that the first generation of pests in Ganyu County, Xuzhou, Jiangsu Province, Rice borer, become the main leaf-eating pests of the local rice. Yonease (1962) studied a number of subgenus Pest insects in the Tokyo area, having reported most of them