PROBLEM TO BE SOLVED: To provide a compound having excellent pest control efficiency on harmful arthropod.SOLUTION: A compound represented by the formula (A), wherein Ph represents a phenyl group, has excellent pest control efficiency on harmful arthropod. The composition normally formulated to an emulsion, an oil solution, a powder agent, a granule, a hydration agent, a granulate hydration agent, a flowable agent, a dry flowable agent, a microcapsule agent or the like by mixing a compound A and an inactive carrier such as a solid carrier, a liquid carrier, or the like, and adding a surfactant, and other assistant for formulation if needed.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】有害節足動物に対して優れた防除効力を有する化合物の提供。【解決手段】式(A)〔式中、Phはフェニル基を表す。〕で示される化合物は有害節足動物に対して優れた防除効力を有する。本発明の組成物は、通常、化合物Aと固体担体、液体担体等の不活性担体とを混合し、必要に応じて界面活性剤、その他の製剤用補助剤を添加して、乳剤、油剤、粉剤、粒剤、水和剤、顆粒水和剤、フロアブル剤、ドライフロアブル剤、マイクロカプセル剤等に製剤化される。【選択図】なし