The leaffooted bug, Leptoglossus zonatus (Heteroptera: Coreidae), has become a key pest of almonds, pistachios, and pomegranates in California. Adults and nymphs directly feed on nuts and fruits, which reduces crop yield and quality and can facilitate pathogen infections. Current monitoring strategies require growers to actively sample the tree canopy, with no economic thresholds being developed for this pest. To improve monitoring of L. zonatus, a three-year study was conducted to identify an optimal trap. A hanging cross-vane panel trap was identified as the best trap type in Year 1, and subsequent work in Years 1–3 focused on refining its use by modifying surface texture and color. Results indicated that coating trap surfaces with the lubricant fluon improved trap catching ability, and adults were most frequently recovered in yellow traps. A hanging cross-vane panel trap with these features could serve as the basis for the development of a new monitoring system for this pest in orchards, which could be improved further if semiochemical lures will be developed.

中文翻译：

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优化陷阱特征以监控果园中的叶足臭虫Leptoglossus zonatus（后翅目：金龟科）。

叶足臭虫Leptoglossus zonatus（Heteroptera：Coreidae）已成为加利福尼亚州杏仁，开心果和石榴的主要害虫。成虫和若虫直接以坚果和水果为食，这降低了农作物的产量和品质，并可能促进病原体感染。当前的监测策略要求种植者积极取样树冠，而没有为该害虫制定经济门槛。为了提高监测L. zonatus，进行了为期三年的研究，以确定最佳陷阱。在第1年，悬挂式交叉叶片式板式疏水阀被认为是最好的疏水阀类型，在第1-3年的后续工作着重于通过改变表面纹理和颜色来完善其用途。结果表明，用润滑剂氟隆覆盖陷阱表面可提高陷阱捕获能力，成虫最常被黄色陷阱捕获。具有这些特征的悬挂式交叉叶片板式捕集阱可作为开发针对果园中这种有害生物的新监测系统的基础，如果将开发出化学信息诱饵，则可以进一步改进。