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田间调查和室内饲养观察表明,康保县草地螟的寄生蝇主要有伞裙追寄蝇、双斑截尾寄蝇等5种。草地螟寄生蝇一般只寄生幼虫,未见寄生其他虫态。寄生率随草地螟幼虫密度增大、虫龄增长而迅速升高。多年发生资料分析,寄生蝇寄生率高的年份,下年草地螟的发生为害程度明显减轻。
Field surveys and indoor feeding observations show that the grasshopper parasites in Kabu County are mainly parasailing flies parasites, two-spot cicada flies and other 5 species. Grasshopper parasitic flies generally only parasitic larvae, no other parasitic parasitic state. The parasitism rate increased rapidly with the increase of larvae density and the worm age. Years of data analysis, parasitic flies parasitic high year, the next year significantly reduce the incidence of meadow moths.