叶部害虫1、网蝽:美国梧桐网蝽(Corythucaciliata)遍及美国东部,是一种危险性害虫,因成虫体上覆有纱罗状或网状翅而得名。若虫黑色扁平,体多刺。成虫和若虫群聚叶片上并吸食为害。被害叶成白色或棕色,形似叶蝉及螨类为害所形成的斑点、点刻和褪色斑。严重受害的叶片成褐色并早落。该虫不长严重大爆发,但每年都有零星、少量的爆发。最严重的为害最易见于市区的遮阴树和观赏树。干旱的夏末损害最显著。成虫蛰伏于寄主及其附近的落叶,枯树皮或其它隐蔽的场所内越冬。春天活动并爬 Leaf pest 1, bug: American stink bug (Corythucaciliata) throughout the eastern United States, is a dangerous pest, due to adult body covered with leno or reticulated wing named. Nymph black flat, spiny body. Adult and nymph clustered on the leaves and smoking on the damage. Victims of white or brown leaves, shaped like leafhoppers and mites formed by the spots, dotted and faded spots. Seriously damaged leaves turn brown and fall early. The insects do not grow seriously outbreaks, but sporadic, sporadic outbreaks occur each year. The most serious damage most easily seen in urban shade and ornamental trees. Arid summer end damage the most significant. Adult dormant in the host and nearby leaves, dead bark or other hidden places overwintering. Spring activity and climb