In South America, especially in Brazil, four members of the Spodoptera complex, Spodoptera albula (Walker, 1857), S. cosmioides (Walker, 1858), S. eridania (Stoll, 1782), and S. frugiperda (J.E. Smith, 1797) are important pests of many crops, in particular corn, soybean and cotton crops. Spodoptera eridania and S. frugiperda have recently invaded Africa and caused serious crop damage, and S. frugiperda has invaded Asia and Oceania. The present study tested the effect of a range of seven temperatures (18–34 °C) on these four Spodoptera species simultaneously, assessing several biological variables. Based on the thermal tolerances obtained experimentally, the ecological zoning of each species in Brazil was mapped and compared spatially, according to the crop calendar of three important crops in different regions (first and second corn harvest, soybean and cotton). Our results showed that S. eridania had the lowest temperature threshold (T_t), i.e., it is favored in regions with more moderate temperatures; and did not tolerate the warmest temperature, failing to complete its development at 34 °C. In contrast, S. albula did not complete its development at 18 °C and may be more successful in warmer regions. In general, S. frugiperda and S. cosmioides were able to develop over a wide range of temperatures, and S. frugiperda showed a higher biological potential at all temperatures evaluated. Our biological data and the computational code are available online. The extensive data produced here can help other entomologists to delimit the spatial distribution of the Spodoptera complex and forecast outbreaks of these pests.

在南美洲，尤其是在巴西，四个成员斜纹复杂，斜纹阿尔布拉（沃克，1857），S. cosmioides（沃克，1858），S。粘虫（斯托尔，1782） ，和草地贪夜蛾（JE史密斯，1797 ）是许多农作物特别是玉米，大豆和棉花作物的重要害虫。亚热带粘虫和草地夜蛾最近已侵入非洲造成了严重的农作物损失，以及草地夜蛾已经入侵亚洲和大洋洲。本研究测试了七个温度范围（18–34°C）对这四个斜纹夜蛾的影响物种同时，评估几个生物学变量。根据实验获得的热耐受性，根据不同地区三种重要农作物（第一和第二玉米收成，大豆和棉花）的作物生长历程，对巴西每个物种的生态分区进行了制图和空间比较。我们的结果表明，大麦链球菌具有最低的温度阈值（T _t），即在温度适中的地区比较受欢迎。并且不能忍受最热的温度，无法在34°C下完成其开发。相反，S。albula在18°C时尚未完成其发育，在温暖的地区可能更成功。一般而言，S。frugiperda和S. cosmioides能够开发在很宽的温度范围内，和草地贪夜蛾显示出在评估所有的温度更高的生物电势。我们的生物学数据和计算代码可在线获得。这里产生的大量数据可以帮助其他昆虫学家划定斜纹夜蛾复合体的空间分布，并预测这些害虫的暴发。