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午毒蛾Ocneria dispar limnaeus是世界性害虫,它分布在古北地区和新北区。也就是在欧洲撒哈拉沙漠以北的非洲小亚细亚、中东、伊朗、阿富汗、苏联、蒙古、朝鲜、日本、加拿大、美国、墨西哥等地。在我国华北、西北、东北、四川、云南、台湾等地均有分布。吉林省从1979年,在不同地区连续发生,造成了一定的为害。为了科学的管理这一害虫,在此期间我们对它的生物学特性进行了观查和分析,对于控制其大发生也作了初步的探讨。一、生物学特性 1 卵:雌虫多把卵产在林缘、道旁的树叉、树缝里,居民点灯光附近的墙角、墙缝、木板缝、电线杆上等处。成卵块状,外盖一层黄色茸毛,虫粒黄色,有光泽,球形,直径约1毫米。卵能忍受-30℃的低温,并不怕水渍。其卵孵化与林木放叶的时间
Ocneria dispar limnaeus is a worldwide pest, which distributes in Gubei area and Xinbei district. That is, Asia Minor Asia, the Middle East, Iran, Afghanistan, the Soviet Union, Mongolia, North Korea, Japan, Canada, the United States and Mexico north of the Sahara in Europe. In North China, Northwest China, Northeast China, Sichuan, Yunnan, Taiwan and other places are distributed. Jilin Province from 1979, occurred in different areas in a row, causing some damage. In order to scientifically manage this pest, during this period we conducted a survey and analysis on its biological characteristics, and also made preliminary discussions on controlling its occurrence. First, the biological characteristics of an egg: a females more eggs in the forest edge, the roadside tree and fork, tree crevices, residential lighting near the corner, wall cracks, wooden sutures, poles and other places. Into the egg block, the outer layer of yellow hair, worm yellow, shiny, spherical, about 1 mm in diameter. Eggs can tolerate -30 ℃ low temperature, and are not afraid of water stains. The time for hatching eggs and leaves of trees