绢粉蝶又名树粉蝶、苹粉蝶、梅白蝶、山楂粉蝶,广布于我国“三北”及四川、安徽、浙江等省,国外分布于日本、朝鲜、俄罗斯、西欧、地中海、北非。绢粉蝶的食性杂,主要危害苹果、梨、杏、沙果、桃、李、山丁子、海棠、山楂、杨、桦、榆、山柳、山花椒、胡颓子、毛榛子、鼠李、紫越橘、榆叶梅等果树及阔叶树。通过笔者近几年在甘肃陇南林区的持续观察,绢粉蝶在该地不仅分布普遍,而且数量庞大,发生盛期,成虫少则 It is widely distributed in Japan, North Korea, Russia, Western Europe, the Mediterranean, North Africa and other provinces in China. It is widely distributed in China, “Three Norths” and Sichuan, Anhui and Zhejiang provinces. . The infestation of the silk-fan butterfly is mainly caused by the eating habits of the apple, pear, apricot, sago, peach, plum, jasmine, begonia, hawthorn, poplar, birch, elm, Bilberry, Ulmus and other fruit trees and broad-leaved trees. Through the author in recent years in Gansu Longnan forest continued observation, not only in the place of silk fan butterfly is widespread, and the number of large, peaked, adult less