七、淡褐小巢娥谈褐小巢娥主要发生在粗放管理的果园,寄主有苹果、山楂和樱桃。此虫既为害叶片、也为害芽和花。成虫体长4—5毫米,头部鳞毛白色、多而长呈冠毛状。触角丝状,褐白相间。前翅银白色,上有分布不匀的褐色鳞片,从前缘中部向后缘有一不整齐的褐色条纹,靠近顶角附近有一块白斑。卵椭圆扁平,长×宽为0.6×0.4毫米,淡绿色,半透明。老熟幼虫体长8—10毫米,头尾细长,全体灰黄色,头壳淡褐色,亚背线红褐色～紫褐色。宽且色深的亚背线与虫体的分节共同构成了梯形斑纹覆予体背,是该幼虫的主要特征。胸足颜色黑白相间,茧长6—8毫米,白色丝质、呈粗纺锤形。蛹长5 Seventh, Xiaoxiaoxiaowei talk brown Xiaoxie E mainly in the extensive management of orchards, the host of apples, hawthorn and cherry. This insects damage the leaves, but also for the bud and flower. Adult body length 4-5 mm, head scales white fur, long and was long crown hair. Antenna filiform, brown and white. Fringed silver, uneven distribution of brown scales, from the middle of the front edge to an irregular brown stripes, near the top corner near a white spot. Egg oval flat, long × width 0.6 × 0.4 mm, light green, translucent. Mature larvae body length 8-10 mm, slender head and tail, all gray yellow, the first shell light brown, sub-line reddish brown ~ purple brown. Wide and deep color of the sub-line and the parasites section together constitute the trapezoidal stripes to the body back, is the main features of the larvae. Color chest and foot color black and white, cocoon length 6-8 mm, white silk, was rough spindle. Pupa 5