刺蛾类害虫比较多,常见的有黄刺蛾、绿刺蛾、扁刺蛾等,可危害海棠、悬铃木、紫薇、桂花、月季等园林绿化树种及枣、杏、梨、苹果、核桃、杏梅、山楂、石榴等果树树种,是多种果树、林木的主要害虫。其小幼虫常群集啃食树叶下表皮及叶肉,仅存上表皮,形成圆形透明斑;3龄后,分散为害,取食全叶,仅留叶脉与叶柄,严重影响林木生长及果实产量,甚至致使树木枯死。河北省平原地区刺蛾类害虫一年两代,幼虫于10月在树干和枝条 There are many insect pests of the thorn moth, such as yellow thorn moth, green moth, flat moth and so on, which may endangered Begonia, Platanus, crape myrtle, osmanthus, rose and other landscaping tree species and jujube, apricot, pear, apple, walnut, apricot Plum, hawthorn, pomegranate and other fruit tree species, is a variety of fruit trees, trees, the main pests. The small larva often gnats the epidermis and the mesophyll under the foliage, leaving only the epidermis, forming a round transparent plaque. After the 3rd instar, dispersal damage, taking the whole leaf, leaving only the veins and petioles, seriously affecting the tree growth and fruit yield, Or even cause trees to die. Spider moth pests in the plains of Hebei Province two generations a year, larvae in October in the trunk and branches