The distribution of lepidopteran pests in soybean (Glycine max (L.) Merr.) is a current knowledge gap limiting accurate prioritization of Integrated Pest Management (IPM) research. Regional characterizations of lepidopteran distribution in soybean are now more than 25 yr old. The goal of this study was to generate a contemporary assessment of the distribution and population persistence of lepidopteran soybean pests. To understand which species are currently infesting soybean and their persistence, we conducted a survey of soybean entomologists with responsibility for approximately 33.6 million hectares of production in 31 U.S. states. Soybean entomologists were asked questions about presence of lepidopteran pests and their persistence in their state. We focused this survey on five lepidopteran pests: corn earworm (Helicoverpa zea Boddie) (Lepidoptera: Noctuidae), green cloverworm (Hypena scabra Fabricius) (Lepidoptera: Erebidae), painted lady (Vanessa cardui L.) (Lepidoptera: Nymphalidae), soybean looper (Chrysodeixis includens Walker) (Lepidoptera: Noctuidae), and velvetbean caterpillar (Anticarsia gemmatalis Hübner) (Lepidoptera: Erebidae). Soybean entomologists also provided insight into regionally relevant or sporadic lepidopteran soybean pests. Participants were also questioned about common scouting practices in each state. Results of this survey highlight dissimilar geographic distribution and relative persistence of lepidopteran pests in soybean. Clear differences in occurrence and abundance among species provide important contemporary distributions and persistence estimates. Assessments of scouting practices demonstrate a need to improve IPM adoption in some states. Results of this study and its complementary pest profile (concurrently published in JIPM) provide a contemporary foundation for studies of lepidopteran soybean pests.

中文翻译：

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美国大豆中五种鳞翅目害虫的分布及种群持续性现状

大豆中鳞翅目害虫 (Glycine max (L.) Merr.) 的分布是当前限制综合害虫管理 (IPM) 研究的准确优先级的知识差距。大豆鳞翅目分布的区域特征现已超过 25 年。本研究的目的是对鳞翅目大豆害虫的分布和种群持续性进行当代评估。为了了解目前哪些物种正在侵染大豆及其持续存在，我们对负责美国 31 个州约 3360 万公顷生产的大豆昆虫学家进行了一项调查。大豆昆虫学家被问及鳞翅目害虫的存在及其在其状态下的持久性。我们将本次调查重点放在五种鳞翅目害虫上：玉米螟（Helicoverpa zea Boddie）（鳞翅目：夜蛾科）、绿三叶虫（Hypena scabra Fabricius）（鳞翅目：Erebidae）、画娘（Vanessa cardui L.）（鳞翅目：蛱蝶科）、大豆钩虫（Chrysodeixis includens Walker）（鳞翅目：夜蛾科）和天鹅绒毛虫（Anticarsia gemmatalis Hübner）（鳞翅目：Erebidae）。大豆昆虫学家还提供了有关区域相关或零星鳞翅目大豆害虫的见解。参与者还被问及每个州的常见球探实践。这项调查的结果突出了大豆中鳞翅目害虫的不同地理分布和相对持久性。物种间发生率和丰度的明显差异提供了重要的当代分布和持久性估计。对侦察实践的评估表明需要在某些州改进 IPM 的采用。这项研究的结果及其补充的害虫概况（同时在 JIPM 上发表）为鳞翅目大豆害虫的研究提供了当代基础。