PROBLEM TO BE SOLVED: To provide a novel pest control agent, especially an insecticide or an acaricide.SOLUTION: There is provided a pyrazole derivative and a pest control agent represented by formula (1), where A1 represents -N(O)m2 or -CR1, R1, R3 and R4 represent each independently a hydrogen atom, a halogen atom or a C1 to C6 alkyl or the like, Ra represents a hydrogen atom or a C1 to C6 alkyl or the like, Rb represents -C(O)OR6b or the like, R6b is a C2 to C6 alkynyl or -N=C(R12b)R12c, R12b and R12c represent each independently a C1 to C6 alkyl or the like, m1 and m2 represent each independently an integer of 0 or 1, and n represents an integer of 0, 1, 2 or 3.COPYRIGHT: (C)2014,JPO&INPIT【課題】新規な有害生物防除剤、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及びR4は各々独立して水素原子、ハロゲン原子又はC1~C6アルキル等を表し、Raは水素原子又はC1~C6アルキル等を表し、Rbは-C(O)OR6b等を表し、R6bはC2~C6アルキニル又は-N=C(R12b)R12cを表し、R12b及びR12cは各々独立してC1~C6アルキル等を表し、m1及びm2は、各々独立して0又は1の整数を表し、nは0、1、2、又は3の整数を表す。]で表されるピラゾール誘導体及び有害生物防除剤。【選択図】なし
