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抚宁县寺耳山国有林区内散生榆树很多。据1979—1981年观察,每年7—8月份,在榆树上发生一种身披白粉的虫子,将十几年生的榆树叶全部吃光,秋季重新萌生新叶,影响树木生长。由于此虫历年发生,比其它榆树害虫威胁性更大。经查阅资料,此虫为榆凤蛾Epicopeia mencia Moore属于风蛾科(Epicopeiidae)。为了掌握其发生发展规律,及时有效地消灭此虫,我们于1982年3月份,在榆树根附近挖蛹,进行室内饲养,配合野外挂笼,经一年的观察,基本上掌握了该虫的生活史和防治方法。
Funing County temple ears mountain forest area within a lot of loose elm. According to the observation of 1979-1981, from July to August each year, a white powdery insect occurs on the elm tree. All the elm leaves that are over ten years old are eaten, and new leaves are regenerated in autumn to affect the growth of trees. As this pest occurs over the years, it is more threatening than other elm pests. The access to information, this worm as Yufeng moth Epicopeia mencia Moore belongs to the moth family (Epicopeiidae). In order to grasp the occurrence and development of the law and promptly and effectively eliminate this pest, we in March 1982, digging pupae near the root of Ulmus for indoor rearing, with the field cage, after a year of observation, basically mastered the worm Life history and methods of prevention and treatment.