沙蒿木蠹蛾(Holcocerus sp.)在内蒙古西部干旱荒漠草原区主要为害沙蒿(包括油蒿Artemisia ordosica和籽蒿Artemisia sphaerocephala)。以幼虫钻蛀沙蒿根或茎基部,在根茎内钻蛀隧道,破坏木质部及输导组织而导致沙蒿死亡。根据1983～1985年在乌拉特前旗阿拉奔地区观察,沙蒿受害率达60％以上,平均每株有虫1.5～2.1头,严重者达10头以上,使沙蒿成片死亡,草场严重退化。 Holcocerus sp. Mainly infects Artemisia ordosica and Artemisia sphaerocephala in the arid desert steppe area of ​​western Inner Mongolia. Drilling larvae of Artemisia annua root or stem base, drilling tunnels in the rhizome, destroying the xylem and the transmission of tissue led to the death of Artemisia. According to the observation from Alachian area in Wulateqianqi from 1983 to 1985, the damage rate of Artemisia sphaerocephala was more than 60%, with an average of 1.5 ~ 2.1 worms per plant and more than 10 serious ones. Degradation.