1982年秋季我们在北京市门头沟青白口公社青白口大队发现了一种为害核桃的新害虫,经中国科学院动物所赵仲岭同志鉴定为毒蛾属,国内新记录种核桃毒蛾(Lymantria juglans chao),1983年夏季在军响、灵水等大队也发现了该虫。核桃毒蛾是核桃的主要害虫之一,幼虫为害有两个高峰期(5月上旬及7月中旬),发生数量较多,从早春到晚秋皆可见到,为害期长。而舞毒蛾、草履蚧在2月始见,5月中下旬后即不见为害。核桃瘤蛾在6月上中旬晃到幼虫为害,以后也很轻微。核桃毒蛾食性单一,目前仅发现为害核桃,将核桃叶食成洞,严 In the autumn of 1982, we discovered a new pest that harmed walnut in Qingbaikou Port of Qingbaikou Commune, Mentougou, Beijing. It was identified as Lymantria juglans chao by the Chinese Academy of Sciences by Comrade Zhao Zhongling, and was newly recorded in 1983 In the military ring in summer, spirit water and other brigades also found the worm. Walnut moth is one of the main pests of walnut, larvae damage has two peaks (early May and mid July), the occurrence of a large number, from early spring to late fall can be seen, the damage period is long. The Gypsy moth, Carassius auratus saw in February, after mid-May not seen harm. Walnut tumor moth Akira in mid-June on the damage to the larvae, the latter is very slight. Walnut poisonous moth feeding a single, only found harmful walnut, walnut leaves food hole, strict