Stink bugs (Hemiptera: Pentatomidae) are agricultural pests of increasing significance in the North Central Region of the United States, posing a threat to major crops such as soybean. Biological control can reduce the need for insecticides to manage these pests, but the parasitism of stink bugs by Tachinidae (Diptera) is poorly characterized in this region. The objective of this study was to evaluate the rate of parasitism of stink bugs by tachinids over 2 yr from nine states across the North Central Region. Parasitism was assessed by quantifying tachinid eggs on the integument of stink bug adults. Parasitism rates (i.e., percent of adult stink bugs with tachinid eggs) were compared across stink bug species, states, stink bug sex, and years. The mean percent parasitism of stink bugs by tachinids was about 6% across the region and did not differ among stink bug species. Mean percent parasitism was significantly higher in Missouri than in northern and western states. In addition, male stink bugs had significantly higher mean percent parasitism than females. Stink bug species commonly found in soybean in the region showed some parasitism and are therefore potentially vulnerable to oviposition by these parasitoids. This is the first study to characterize the level of parasitism of stink bugs by tachinids across the North Central Region.

中文翻译：

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Tachinidae在美国北部中部地区的大豆中对成虫类的寄生。

臭虫（半翅目：P科）是在美国北部中部地区日益重要的农业害虫，对大豆等主要农作物构成威胁。生物防治可以减少杀虫剂处理这些害虫的需要，但是该地区Ta蛛科（Diptera）对臭虫的寄生性表现不佳。这项研究的目的是评估来自北部中部地区的9个州超过2年的节肢动物的臭chin寄生率。通过量化臭臭虫成虫外皮上的棘爪类卵来评估寄生情况。比较了各种臭虫的种类，状态，臭虫的性别和年份的寄生虫发生率（即，成年臭虫和鱼卵的百分比）。在整个区域内，chin类动物的臭虫平均寄生百分率约为6％，在臭虫物种之间没有差异。密苏里州的平均寄生率显着高于北部和西部州。另外，男性臭虫的平均寄生百分率明显高于女性。该地区大豆中常见的臭虫物种显示出一些寄生虫，因此可能容易受到这些寄生虫的排卵。这是第一个描述北部中部地区类寄生虫的寄生虫水平的研究。该地区大豆中常见的臭虫物种显示出一些寄生虫，因此可能容易受到这些寄生虫的排卵。这是第一个描述北部中部地区类寄生虫的寄生虫水平的研究。该地区大豆中常见的臭虫物种显示出一些寄生虫，因此可能容易受到这些寄生虫的排卵。这是第一个描述北部中部地区类寄生虫的寄生虫水平的研究。