PROBLEM TO BE SOLVED: To provide an insecticide composition with a higher insecticidal effect, which can reduce the dose of agricultural chemicals or the frequency of applications.SOLUTION: An insecticide composition comprises a compound represented by the formula [Ia], where R1 represents a halogen atom or a C1-6 haloalkyl group, R2 represents a halogen atom, and X represents N, and a neonicotinoid compound such as clothianidin and thiamethoxam.COPYRIGHT: (C)2014,JPO&INPIT【課題】農薬施用量の低減あるいは施用回数の低減が可能である高い殺虫効果を有する殺虫剤組成物の提供。【解決手段】式〔Ia〕[式中、R1がハロゲン原子またはC1-6ハロアルキル基を表し、R2がハロゲン原子を表し、XがNを示す。]で表わされる化合物とクロチアニジン、チアメトキサムなどのネオニコチノイド系化合物とを含有する殺虫性組成物。【選択図】なし