Rhynocoris marginatus (F.) (Reduviidae: Hemiptera:) is an efficient biocontrol agent in the management of multiple insect pests. The study aimed to assess the life table and demographic parameters of R. marginatus feeding on two lepidopterous insect pests, Spodoptera litura (Fab.) (Noctuidae) and Pieris brassicae (Linn.) (Pieridae). The developmental period of all life stages of R. marginatus was shorter when S. litura larvae were provided. The net reproductive rate (R₀) was higher (411.4 offspring per individual) on S. litura, while it was 112.4 offspring per individual on P. brassicae. Mean generation time (T) of R. marginatus was shorter (93.28 d) on S. litura than on P. brassicae (105.90 d). Values of the intrinsic rate of increase (0.064 d⁻¹) and finite rate of increase (1.066 d⁻¹) for R. marginatus fed on S. litura were found higher than on P. brassicae (0.044 d⁻¹ and 1.045 d⁻¹, respectively). Age-stage–specific survival rate and age-stage-specific fecundity of R. marginatus were higher feeding on S. litura compared to P. brassicae larvae. The S. litura was the most suitable prey as compared to P. brassicae for R. marginatus. Our study suggests R. marginatus as a useful biocontrol agent against S. litura pest.

边缘Rhynocoris marginatus（F.）（Reduviidae：Hemiptera :)是一种有效的生物防治剂，可处理多种害虫。该研究的目的是评估生命表和人口统计参数R. marginatus两个鳞翅目害虫摄食，斜纹夜蛾（FAB）（夜蛾科）和大菜粉蝶（属）（粉蝶科）。当提供斜纹夜蛾幼虫时，边缘缘毛蟹的所有生命阶段的发育期都较短。斜纹夜蛾的净繁殖率（R ₀）较高（每人411.4个后代），而芸苔假单胞菌的净繁殖率（每人后代112.4个）。斜纹夜蛾的边缘生平均时间（T）短于芸苔假单胞菌（105.90 d）（93.28 d）。发现斜纹夜蛾饲喂的褐缘R的内在增长率（0.064 d ^-1）和有限增长率（1.066 d ^-1）的值均高于芸苔属（0.044 d ^-1和1.045 d-）^{。 1}）。年龄阶段特有的生存率和年龄阶段特有的繁殖力R. marginatus上均高于喂养斜纹夜蛾相比P.甘蓝幼虫。的相对于芸苔边缘小菜蛾，斜纹葡萄球菌是最合适的猎物。我们的研究表明，边缘缘红螺菌是一种有效的抗斜纹夜蛾害虫的生物防治剂。