PROBLEM TO BE SOLVED: To provide a novel pest controlling agent, especially an insecticide or acaricide having a high pest controlling activity, low toxicity against nontarget organisms and low residual properties.SOLUTION: There are provided a pyrazole derivative represented by the formula (1): (wherein, A1 represents -N(O)m2 or -CR1 R1, R3 and R4 individually represent a hydrogen atom, a halogen atom, an alkyl having 1 to 6 carbon atoms or the like Ra represents an alkynyl having 2 to 6 carbon atom or the like Rb represents -C(O)R7 or the like Rs7 individually represent an alkyl having 1 to 6 carbon atoms or the like n represents an integer of 0, 1, 2 or 3 and m1 represents an integer of 0 or 1) or a salt thereof and a pest controlling agent containing the compound as an active ingredient.COPYRIGHT: (C)2014,JPO&INPIT【課題】高度な有害生物防除活性を有し、非標的生物に対して低害性且つ低残留性の新規の有害生物防除剤、特に殺虫剤又は殺ダニ剤の提供。【解決手段】式(1):[式中、A1は、-N(O)m2又は-CR1を表し、R1、R3、R4は、それぞれ、水素原子、ハロゲン原子、C1~C6アルキル等を表し、Raは、C2~C6アルキニル等を表し、Rbは、-C(O)R7等を表し、R7は、それぞれ、C1~C6アルキル等を表し、nは0、1、2又は3の整数を表し、m1は0又は1の整数を表す。]で表されるピラゾール誘導体又はその塩及び前記化合物を有効成分として含有する有害生物防除剤。【選択図】なし
