Department of Entomology, Louisiana State University Agricultural Center, Baton Rouge, LA.
J Econ Entomol. 2018 Aug 3;111(4):1716-1723. doi: 10.1093/jee/toy113.
The redbanded stink bug, Piezodorus guildinii (Westwood), has emerged as a major stink bug pest of soybean in Louisiana during the last decade. In the spring, this species is usually found in leguminous hosts where populations can build up before migrating to soybean fields in the summer. However, studies looking at the preference of this species to the potential spring leguminous hosts under the natural conditions are lacking. Field studies were conducted in different geographical locations of Louisiana from 2013 to 2015 to evaluate preference of P. guildinii to six different leguminous cover crops: crimson clover, (Trifolium incarnatum L.), cardinal red clover, (Trifolium pratense L.), Austrian winter pea, (Pisum sativum L.), berseem clover, (Trifolium alexandrinum L.), hairy vetch, (Vicia villosa Roth), and white clover, (Trifolium repens L.). Our study showed that the odds of finding both adult and nymph P. guildinii was significantly higher in crimson clover followed by white clover, while the odds of finding both adult and nymph P. guildinii was significantly lower in other hosts. Therefore, crimson and white clovers are the preferred hosts as well as the important reproductive host plants of P. guildinii in the spring season.
红带臭蝽（Piezodorus guildinii (Westwood)）在过去十年中已成为路易斯安那州大豆的主要臭蝽害虫。在春季，该物种通常在豆科宿主中发现，其种群在夏季迁移到大豆田之前可以大量繁殖。然而，缺乏关于该物种在自然条件下对潜在春季豆科宿主的偏好的研究。2013 年至 2015 年，在路易斯安那州的不同地理位置进行了田间研究，以评估 P. guildinii 对六种不同豆科覆盖作物的偏好：深红三叶草（Trifolium incarnatum L.）、红衣红三叶草（Trifolium pratense L.）、奥地利冬豌豆（Pisum sativum L.）、百脉根（Trifolium alexandrinum L.）、毛野豌豆（Vicia villosa Roth）和白三叶草（Trifolium repens L.）。我们的研究表明，在深红三叶草中发现成虫和若虫 P. guildinii 的几率明显高于白三叶草，而在其他宿主中发现成虫和若虫 P. guildinii 的几率明显较低。因此，深红三叶草和白三叶草是 P. guildinii 在春季的首选宿主和重要繁殖寄主植物。
