乌鲁木齐叶(Crosita altaica urumchiana Chen)是新疆北部冷季草场主要害虫之一.此虫两年完成一代,以成虫和卵在石片下、蒿草根部越冬.一头雌虫平均产卵68粒.一般年份蒿草被害率为70%,大发生年达90%以上.防治试验表明.有机磷和拟除虫菊酯类杀虫剂的灭虫效果达85%以上. Crosita altaica urumchiana Chen is one of the major pests in the cold season pasture in northern Xinjiang, where the pest was completed in two years with adults and eggs under the stone tablet, and the wormwood roots were overwintering. In general years, the damage rate of Artemisia annua L. was 70% and the number of annual occurrences was over 90% .Control experiments showed that the pest control effect of organophosphate and pyrethroid insecticides was more than 85%.