落叶松翼丝叶蜂,属于膜翅目叶蜂科丝叶蜂亚科,是落叶松林木的重要食叶性害虫。落叶松翼丝叶蜂,主要以幼虫群集于1～2a生枝条,于针叶簇丛中取食为害,受害林木针叶稀少。被害严重时,针叶食光,呈黄褐色,远望如同火烧一样,严重地感威胁着落叶松的生长。据调查,落叶松林木受害率一般为30％～50％,个别受害严重林地,被害率达60％～100％,单株虫口密度达数百头至千头以上。 1 在4月下旬至5月上旬,白头翁开花时,初 Larch Blended wing bee, belonged to the genus Hymenoptera, bee Symwort bee subfamily, is an important leaf-eating pests of larch forest. Larix virescens bee, the main larvae cluster in 1 ~ 2a raw branches, feeding in the needle tufts damage, victim trees sparsely. Serious victims, the needles light, yellowish brown, afar as the same as the fire, a serious threat to the growth of larch. According to the survey, the larch forest damage rate is generally 30% to 50%, the individual victims of serious woodland, the victimization rate of 60% to 100%, single insect population density of hundreds to 1000 or more. 1 in late April to early May, Pulsatilla flowering, early