PROBLEM TO BE SOLVED: To provide a pest control agent having excellent insecticidal activity.SOLUTION: A composition of the pest control agent includes a pyripyropene derivative represented by formula (I). In the formula: Hetis a 3-pyridyl group; and Rare acyloxy groups.【課題】優れた殺虫活性を有する害虫防除剤を提供する。【解決手段】下式(I)で示されるピリピロペン誘導体を含有する害虫防除剤組成物。[式中、Het1は3-ピリジル基を表し、R1-4はアシルオキシ基等を表す。]【選択図】なし