Species composition of two Atractomorpha grasshoppers on agricultural crops and toxicity of insecticides against the exotic grasshopper, Atractomorpha sinensis sinensis Bolívar (Orthoptera: Pyrgomorphidae), in Osaka Prefecture, Japan

Abstract

In 2020, we surveyed the relative abundance of a native grasshopper, Atractomorpha lata (Motschoulsky), and an exotic congener, A. sinensis sinensis Bolívar, on agricultural crops, including eggplant, cockscomb, Chinese cabbage, and crown daisy, in Habikino City, Osaka Prefecture, and found that A. sinensis sinensis was predominant on all investigated crops. In addition, we assessed the toxicity of nine insecticides against A. sinensis sinensis adults collected in Habikino City using the cabbage leaf-dipping method, which revealed that MEP, fipronil, and tetraniliprole are the most effective insecticides against this grasshopper species.