The soybean gall midge (Resseliella maxima Gagné) was recently identified as a new species causing injury to soybean in the Midwestern United States. Although this insect was only recently identified, it has likely been present in soybean fields for at least the last 8 yr based on anecdotal reports. The soybean gall midge has historically been observed late in the season on soybean plants that were believed to have been previously compromised by a plant pathogen or mechanical damage with little to no concern for economic losses. In late June 2018, dead and dying plants were found to be associated with the soybean gall midge across four midwestern states. The distribution of plant injury in the field, larval feeding within the stem, and timing of infestation indicate that it is likely an important pest of soybean. Yield losses in soybean gall midge infested fields can be up to 100% for the first 30 meters from the field edge, with losses of 17–31% further into the field. The rapid development of the soybean gall midge as an important pest of soybean has left large gaps in the knowledge necessary to develop an integrated pest management program.

中文翻译：

---

大豆瘿蚊（双翅目：Cecidomyiidae），一种在美国对大豆造成伤害的新物种

大豆瘿蚊 (Resseliella maxima Gagné) 最近在美国中西部被确定为一种对大豆造成伤害的新物种。尽管这种昆虫是最近才被发现的，但根据轶事报道，它可能至少在过去 8 年中一直存在于大豆田中。历史上，大豆瘿蚊在大豆植物的季节后期被观察到，这些植物被认为以前受到植物病原体或机械损伤的危害，几乎不担心经济损失。2018 年 6 月下旬，中西部四个州发现死亡和垂死的植物与豆瘿蚊有关。田间植物受害分布、茎内幼虫取食和侵染时间表明它可能是大豆的重要害虫。在距田边前 30 米处，受大豆瘿蠓侵染的田地的产量损失可能高达 100%，进一步进入田间的损失率为 17-31%。大豆瘿蚊作为一种重要的大豆害虫迅速发展，在制定综合害虫管理计划所需的知识方面留下了巨大的空白。