梨叶甲(Paropsides duodecimpustulafa Gobler)是一种为害梨、棠梨叶片的重要害虫,发生普遍,其中以长江以南密度较高。例如江西省南昌郊区,虫口密度高的每株可达40多头,为害十分严重。有关梨叶甲的生物学特性,以往报道甚少,尤其各虫态的历期及生活习性,尚缺乏系统资料。 Paropsides duodecimpustulafa Goblet is an important pest of pear and tangli pear leaves. It occurs prevalently, especially in the south of Yangtze River. For example, suburbs of Nanchang, Jiangxi Province, insect population density of up to 40 per head, the damage is very serious. The biological characteristics of the pemphigus, rarely reported in the past, especially the life cycle of each state and habits, but the lack of systematic information.