The fall webworm (FWW) Hyphantria cunea, native to North America, is a globally invasive pest of a wide range of forest and fruit trees. Spraying of pesticides is the primary method for the control of FWW. In this study, toxicity and feeding cessation of two potential pesticides against the FWW, chlorantraniliprole, and chromafenozide, were evaluated. Both pesticides were slow to affect FWW. For chlorantraniliprole, the highest mortality of third instar larvae occurred at 72 h with an LC₅₀ of 10.34 mg/L, while for chromafenozide, the highest mortality occurred at 72 h with an LC₅₀ value 74.0950 mg/L. Low concentrations of both pesticides led to larvae ceasing to feed after six hours (chlorantraniliprole) and 24 h (chromafenozide). Both pesticides had persistent effects; thirty days after being applied at concentrations of 16, 26.67, and 35.56 mg/L to leaves, 93.33% of newly contacted larvae died after seven days. Our study showed that chlorantraniliprole and chromafenozide could be alternatively used against FWW and form a component of integrated control programs. The results provide information to guide the usage of chlorantraniliprole and chromafenozide in FWW control.

北美原产的秋天网虫（FWW）Hyphantria cunea是一种侵害全球的有害生物，其范围广泛，遍布森林和果树。喷洒农药是控制FWW的主要方法。在这项研究中，评估了两种潜在的杀虫剂对FWW的毒性和停止采食的作用：扑虫腈和苯甲酰肼。两种农药对FWW的影响都很缓慢。百虫腈的第三龄幼虫死亡率最高，在LC ₅₀为10.34 mg / L的情况下发生在72 h处，而苯溴氰脲在LC _50的72 h下发生的死亡率最高。值74.0950 mg / L。两种农药的浓度均较低，导致幼虫在六小时（氯吡虫啉）和24小时（苯甲酰肼）后不再喂食。两种农药均具有持久作用；分别以16、26.67和35.56 mg / L的浓度施用于叶片后30天，新接触的幼虫有93.33％在7天后死亡。我们的研究表明，氯蒽醌和色胺磷可以替代性地用于FWW并形成综合控制程序的组成部分。结果提供了信息，以指导在FWW控件中使用氯虫腈和苯甲酰肼。