A harmful arthropod control composition according to the present invention comprises an amide compound represented by formula (1), tricyclazole and at least one planthopper control compound selected from group (A), and has an excellent controlling effect on harmful arthropods. Group (A): a group consisting of clothianidin, nitenpyram, dinotefuran, ethiprole, silafluofen and ethofenprox.本發明係關於含有本發明之式(1)所表示之醯胺化合物、三賽唑(Tricyclazole)以及選自組(A)中至少1種稻蝨類防除化合物之有害節肢動物防除組成物係對有害節肢動物具有優異的防除效力。組(A):可尼丁(Clothianidin)、烯啶蟲胺(Nitenpyram)、達特南(Dinotefuran)、乙蟲清(Ethiprole)、矽護芬(Silafluofen)及醚菊酯(Ethofenprox)所成群。
