胡桃楸是我省珍贵的树种之一。山区、半山区均有分布,但几年来,有胡桃楸扃花虫[Ceatrolina depessk thorcia lealy]不少地方的胡桃楸纯林和天然次生林里的胡桃楸均遭到了危害。特别是其成虫和幼虫。全食胡桃楸的叶,并危害新芽。受害较重的林分,绝大部分树叶被吃光,直至七月中旬才能重新发出新叶来。有的次生林和人工林连年受 Juglans mandshurica is one of the precious tree species in our province. Both mountainous and semi-mountainous areas are distributed, but over the past few years there have been some pests of Juglans of Catalpa peatica [Ceatrolina depessk thorcia lealy], and Juglans mandshurica in natural secondary forests have been harmed. Especially its adults and larvae. Wholegrain Juglans mandshurica leaves, and endanger the sprouts. The hardest hit, most of the leaves were eaten up until mid-July to reissue new leaves. Some secondary forests and plantations year after year