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近几年来,大叶黄杨小吉丁虫Agrilus sp.在南京地区发生较普遍,严重地段为害率高达96％,主要是以幼虫在皮层内蛀食,形成螺旋状虫道,阻断枝条养分、水分的运送,造成植株迅速枯死,严重破坏了绿篱的生长和景观。 该虫在南京地区一年发生一代。以老熟幼虫在木质部越冬,翌年4月下旬化蛹,6月上旬成虫羽化。成虫喜光,多于晴天中午前后活动。阴雨天则静栖于叶背。6月下旬开始产卵,卵多产于树皮裂缝或节疤内。每处产1—2粒,多
In recent years, the Euonymus japonicus Agrilus sp. Occurred in Nanjing, the more common, serious damage rate as high as 96%, mainly in larvae caterpillars in the cortex, the formation of helminthes, blocking the branches of nutrients, water Of the transport, causing plants to die quickly, severely undermined the growth and landscape of hedges. The worm occurred in Nanjing a generation a year. Mature larvae wintering in the xylem, pupation in late April the following year, adult in early June eclosion. Light hi adults, more than sunny before and after noon activities. Rainy days are still resting in the leaves back. Spawning begins in late June and the eggs are prolific in bark cracks or knuckles. Each produce 1-2 grains, and more