锯胸叶甲危害桦木及落叶松,在我国对此虫尚未引起注意,过去仅有简单的分布记录。本种的分类地位,迄今存在分歧,故无论从经济意义或理论方面,对这一害虫的全面研究均有着重要意义。本文就目前研究所得,作一些介绍,以引起各方面注意。锯胸叶甲Syneta adamsi Baly属鞘翅目叶甲总科Chrysomeloide a锯胸叶甲亚科Synetinae,锯胸叶甲属Syneta Dejean。此属世界已知十余种,主要分布在北美,少数种类分布在亚洲东部及欧洲,仅限于全北区。此属食性范围比较广,包括裸子植物及被子植物,计有松科、桦木科、蔷薇科、槭树科、山毛榉科、杨柳科、山茱萸科、虎耳草科等。多数种类对寄主植物有专化现象。S.adamsi分布在我国、日本及西伯利亚地区,S.betulae为欧洲的广布种,主要分布在北欧斯堪第那维也半岛及拉普兰,这两个种均为林木常见的 Saw leaf chestnut endanger birch and larch, in our country this worm has not yet attracted the attention of the past, only a simple distribution record. The classification status of this species has so far diverged so that a comprehensive study on this pest is of great significance both in economic sense and in theory. This article on the current research, make some introduction, to attract all attention. Syneta adamsi Baly is a genera of Coleoptera, Chrysomeloide a, and Syneta Dejean is a member of Syneta Dejean. This world is known for more than ten species, mainly in North America, a few species are distributed in eastern Asia and Europe, limited to all North. This diet is relatively broad, including gymnosperms and angiosperms, including Pinaceae, Betulaceae, Rosaceae, Maple Branch, Beech Division, willow Branch, Cornus, saxifrage and so on. Most species have specialization on the host plant phenomenon. S.adamsi is distributed in China, Japan and Siberia. S.betulae is a widely distributed species in Europe, mainly distributed in Scandinavia in Northern Europe and Lapland, both of which are common to forests