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Emerals Ash Borer

机译:翡翠灰Bor

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摘要

Emerald ash borer (EAB),Agrilus planipennis Fairmaire, is an invasive pest introduced from Asia that attacks ash trees. It was first introduced in North America sometime in the 1990s. Adult beetles are about 3/8- to 5/8-inch long with metallic green wing covers and a coppery red or purple abdomen. Males are smaller than females and have fine hairs on the ventral side of the thorax. They are active from late May through early September, but are most common in June and July. The larvae live under the bark of the tree and feed in the vascular cambium on the nutrient-rich conductive tissues. The adult beetles leave a "D"-shaped exit hole, approxi-mately 1/8-inch wide when they emerge from the bark in June.
机译:翡翠灰bore(Agrilus planipennis Fairmaire)是一种从亚洲传入的入侵性害虫,攻击灰树。它于1990年代某个时候首次在北美推出。成年甲虫长约3/8至5/8英寸,带有金属绿色的机翼盖和铜红色或紫色的腹部。雄性比雌性小,在胸腹侧毛细。它们从5月下旬到9月初活跃,但最常见的是6月和7月。幼虫生活在树的树皮下,并在营养丰富的导电组织上喂入维管形成层。成年甲虫在6月从树皮中出来时会留下一个“ D”形出口孔,约1/8英寸宽。

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    《Arbor Age》 |2007年第4期|共1页
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  • 正文语种 eng
  • 中图分类 林业;
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