Fall armyworm, Spodoptera frugiperda (J.E. Smith), is a polyphagous pest invaded India and seriously threatened maize and other crops. The detailed information on its occurrence and damage severity in the invaded regions are limited. In this study, we assessed the occurrence, incidence and damage severity of fall armyworm in 126 maize fields in 10 districts of Karnataka during the rainfed condition. Further, potential co-occurrence of this pest with native stem borers and its natural enemies explored to tackle this pest. Survey reports revealed that the fall armyworm was well distributed across the maize growing regions of Karnataka with 44–100% field infestation. The damage incidence of S. frugiperda was 22.13–46.83% with damage severity 0 to 4.9 on the 0 to 9 scale. The larval count was 0.93 ± 0.17 to 3.07 ± 0.58 per 10 plants across the locations. The co-occurrence of S. frugiperda with the native maize stem borers, Chilo partellus (Swinhoe) and Sesamia inferens (Walker) was less than 5% of the plants. It shows that S. frugiperda had dominated the native stem borers causing significant damage to maize. This study found five parasitoids parasitizing the egg, egg-larval, larval and larval-pupal stages of S. frugiperda. Trichogramma chilonis Ishii and Telenomus remus Nixon egg parasitism rates were 15.81–23.87% and 5.44–8.78%, respectively. The larval parasitoids caused 9.18% parasitism of S. frugiperda larvae. Trichogramma chilonis appeared as a major natural enemy. These data provide an important baseline for the development of sustainable management strategies for S. frugiperda.

秋季夜蛾，Spodoptera frugiperda（JE Smith）是一种多食性害虫，侵入印度，严重威胁了玉米和其他农作物。关于其在入侵地区的发生和破坏严重性的详细信息有限。在这项研究中，我们评估了在雨养条件下卡纳塔克邦10个地区的126个玉米田中秋夜粘虫的发生，发生和危害的严重性。此外，探索了该害虫与本地茎bore及其天敌的潜在共生，以解决该害虫。调查报告显示，秋天的夜蛾在卡纳塔克邦的玉米生长地区分布良好，田间侵染率为44-100％。弗氏链球菌的危害发生率的严重程度从0到9，为22.13–46.83％，严重程度从0到4.9。整个地点的每10株幼虫的幼虫数为0.93±0.17至3.07±0.58。的同现的S.frugiperda与天然玉米螟虫，二化螟partellus（温侯）和大螟（沃克）是植物的少于5％。它表明S. frugiperda占据了当地的茎bore虫，对玉米造成了重大损害。这项研究发现有寄生蜂寄生卵，卵幼虫，幼虫和幼虫，蛹的阶段草地夜蛾。赤眼石楠Ishii和Telenomus remus尼克松的卵寄生率分别为15.81–23.87％和5.44–8.78％。幼虫类寄生物引起了S. frugiperda幼虫的9.18％寄生。赤眼蜂（Trichogramma chilonis）是主要的天敌。这些数据为拟南芥的可持续管理策略的发展提供了重要的基线。