天幕毛虫为害状天幕毛虫俗称春黏虫、顶针虫。幼龄幼虫在樱桃枝杈处结网,将网幕周围的叶片吃光,由于有结网张幕的习性,故称天幕毛虫。成虫将卵产在细枝上,密集成环状排列,形似顶针。以卵越冬,第二年樱桃萌芽后,幼虫从壳内钻出,先在卵环附近群集为害嫩叶,随后下移至小枝杈处结网张幕。白天潜伏网内,夜间爬出为害。近老熟幼虫,白天群集在树干背阴面枝杈处, Atrium caterpillars Harm-shaped curtain caterpillars commonly known as spring worm, thimble insects. Young larvae at the branches of cherry twigs net, the leaves around the screen eaten, due to the habit of netting curtain, it is called the sky caterpillars. Adult eggs in twigs, densely arranged into a ring, shaped thimble. Egg overwintering, the second year after cherry buds, the larvae from the shell drilled, first in the oval ring near the cluster damage young leaves, and then moved down to the twigs at the junction net curtain. Lurking during the day and night, crawling out of harm at night. Nearly mature larvae, cluster in the trunk during the day,