PROBLEM TO BE SOLVED: To provide a pest control agent composition to be used for controlling undesirable pests.SOLUTION: The pest control agent composition contains: an alkoxyimino derivative (component A) shown by the following formula [I] (in which X is a cyano group or a carbamoyl group R1 is an alkyl group or the like R2 is a hydrogen atom, an alkyl group or the like R3 is a hydrogen atom, a halogen atom or the like W is a nitrogen atom or a methine group) and (component B) which is fulvene diamide, pyridalyl, flonicamid, ethiprole, cadusafos, buprofenzin or the like.COPYRIGHT: (C)2015,JPO&INPIT【課題】望ましくない有害生物を防除する有害生物防除剤組成物を提供する。【解決手段】下記式[I]のアルコキシイミノ誘導体〔成分A〕と、〔成分B〕とを含有する有害生物防除剤組成物。[Xは、シアノ基又はカルバモイル基を、R1アルキル基等を、R2は、水素原子、アルキル基等を、R3は水素原子、ハロゲン原子等を、Wは、窒素原子又はメチン基を表す。]〔成分B〕フルベンジアミド、ピリダリル、フロニカミド、エチプロール、カズサホス、ブプロフェンジン等。【選択図】なし