1形态特征体长34～46mm,体密被黄褐色绒毛,前胸有横皱纹,有侧刺突,鞘翅基部密布黑色小颗粒。卵黄白,幼虫乳白,圆筒形,前胸背板硬化,有3对尖叶状纹,腹部1～7节背面有步泡突。2生活习性2～3年1代,以幼虫在枝干内越冬。6月出现成虫,有补充营养习性,U形刻槽,每槽一卵,卵期10天。坑道通直,有30多个排粪孔。成虫啮食桑、构、柘等桑科植物的嫩梢树皮。幼虫蛀害树干,形成孔道,使树木衰老、枯死。 1 morphological characteristics Body length 34 ~ 46mm, body dense by brown hair, chest with transverse wrinkles, there are lateral spines, coax wings at the base of dense black small particles. Yolk white, larvae milky, cylindrical, front and back sclerosis, there are 3 pairs of pointed leaf-like pattern, the abdomen 1 to 7 on the back of the step bubble sudden. 2 Habits 2 to 3 years a generation, with larvae in the branches of the winter. Adults in June, there are nutritional habits, U-shaped groove, an egg per groove, the egg period of 10 days. Trenches straight, there are more than 30 fecal holes. Adult feeding edible mulberry, structure, mulberry and other plants of the young shoots bark. Larvae moth damage the trunk, the formation of channels, the trees aging, dead.