栗雪片象是商洛地区板栗生产上的主要害虫之一,普遍蔓延于全区各县(市),危害率为25～45％,有的地方高达70％以上。主要为害栗苞,形成早期落苞,导致板栗产量下降,品质低劣,造成经济损失。 栗雪片象在商洛地区1年发生1代,以老熟幼虫在落地栗苞中越冬,翌年3月下旬至6月上旬陆续化蛹,蛹期25天左右。5月上旬成虫开始羽化,5月中旬至6月上旬为羽化盛期,7月上旬结束,羽化时间极不整 As one of the main pests in the chestnut production in Shangluo region, chestnut snow flake is widespread in counties (cities) in the whole region, with the harm rate of 25-45% and in some places as high as over 70%. The main damage to chestnut buds, the formation of early fall buds, resulting in reduced chestnut production, poor quality, resulting in economic losses. Chestnut flakes like 1 year in Shangluo area, with the mature larvae overwintering in the fall chestnut. The pupal stage is about 25 days after the pupal stage is gradually pupated from the end of March to the beginning of June in the following year. In early May, adults begin to emerge, and mid-May to early June are eclosion, ending in early July, with very little emergence time