PROBLEM TO BE SOLVED: To provide a pest control agent. A compound of formula (III), (IV) or (V). [A1 and A2: C etc .； X1: C1-6 alkyl groups which may be unsubstituted； n is an integer of 0 to 4； R1: C1-6 alkylthio groups which may be unsubstituted； R2 and R3: H etc .； Ar : Indicates C6 to 10 aryl groups which may be unsubstituted] [Selection diagram] None【課題】有害生物防除剤の提供。【解決手段】式（III）、（IV）又は（V）の化合物。[Ａ1及びＡ2：Ｃ等；Ｘ1：無置換でもよいＣ１～６アルキル基等；ｎは０～４の整数；Ｒ1：無置換でもよいＣ１～６アルキルチオ基等；Ｒ２及びＲ３：Ｈ等；Ａｒ：無置換でもよいＣ６～１０アリール基等を示す]【選択図】なし
