The azalea lace bug (Stephanitis pyrioides Scott) (Hemiptera: Tingidae) is an invasive pest of rhododendrons and azaleas (Ericaceae: Rhododendron), which feeds on the underside of leaves causing chlorosis, reduced photosynthesis, and even plant death. While insecticides can control this pest, growers, landscape managers, and homeowners have requested softer alternatives. Augmentative release of predatory green lacewing Chrysoperla sp. (Neuroptera: Chrysopidae) eggs and larvae has reduced S. pyrioides, but large-scale implementation may not be practical nor cost-effective. Attracting naturally occurring Chrysopidae with plant volatiles may be an economical and convenient option. In this study, we tested whether volatile blends 1) attracted Chrysoperla sp., and 2) controlled S. pyrioides populations on Rhododendron spp. in farm or urban landscapes. Experimental plots contained different multicomponent lures placed aboveground next to infested plants. Adult Chrysoperla sp., other natural enemies, and S. pyrioides from egg to adult stages were monitored in both farm and urban landscapes for two summers. Overall, two out of three volatile blends consistently attracted Chrysoperla sp. to sticky traps near baited plants. Methyl salicylate + acetic acid + 2-phenylethanol (methyl salicylate blend) and acetophenone + acetic acid + 2-phenylethanol (acetophenone blend) captured more adult Chrysoperla sp. than control traps in farm landscapes. However, only the acetophenone blend was associated with a slight reduction of S. pyrioides. Additional research is needed to determine whether the phenology of the first generation of both species are synchronized for effective season biological control in the Pacific Northwest.

中文翻译：

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用杜鹃花和杜鹃花中的花边臭虫（半翅目：定蝇科）吸引植物挥发的菊科。

杜鹃花花边小虫（Stephanitis pyrioides Scott）（半翅目：ing科）是杜鹃花和杜鹃花（Ericaceae：杜鹃花）的一种侵入性害虫，其以叶子的下侧为食，引起绿化，光合作用减少甚至植物死亡。尽管杀虫剂可以控制这种害虫，但种植者，景观管理者和房主都要求使用更柔软的替代品。增强释放掠食性绿色草laceChrysoperla sp.。（中翅目：金眼科）卵和幼虫减少了硫黄葡萄球菌，但大规模实施可能不切实际，也不合算。用植物挥发物吸引自然存在的虎科可能是一种经济且方便的选择。在这项研究中，我们测试了挥发性混合物1）是否吸引了Chrysoperla sp。，和2）杜鹃杜鹃属上控制的硫黄葡萄球菌种群。在农场或城市景观中。实验地块包含放置在被侵染植物旁地上的不同多组分诱饵。在两个夏天的农场和城市景观中，监测了成年Chrysoperla sp。，其他天敌和从卵到成年阶段的硫黄葡萄球菌。总体而言，三分之二的挥发性混合物始终吸引克莱索拉sp。到诱饵植物附近的粘性陷阱。水杨酸甲酯+乙酸+ 2-苯乙醇（水杨酸甲酯混合物）和苯乙酮+乙酸+ 2-苯乙醇（苯乙酮混合物）捕获了更多的成年Chrysoperla sp。而不是控制农场景观中的陷阱。然而，仅苯乙酮混合物与硫黄葡萄球菌的轻微减少有关。需要进行进一步的研究以确定这两种物种的第一代物候是否同步，以便在西北太平洋进行有效的季节生物防治。