PROBLEM TO BE SOLVED: To provide a compound having high insecticidal activity on low-susceptibility insect species and hardly controllable insect species and being usable as an agricultural or horticultural insecticide.SOLUTION: A compound represented by formula (I) [wherein R1 is an alkyl group, a cycloalkyl group, an alkoxyl group, or the like and R2, R3, and R4 are each an alkyl group] has high insecticidal activity on low-susceptibility insect species and hardly controllable insect species. Therefore, the compound or an agriculturally or horticulturally acceptable acid addition salt thereof is useful as an agricultural or horticultural insecticide.COPYRIGHT: (C)2008,JPO&INPIT【課題】農園芸用殺虫剤として使用可能である、低感受性虫種や難防除虫種に対する優れた殺虫活性を有する化合物の提供。【解決手段】下記式(I)[式中、R1はアルキル基、環状アルキル基、アルコシル基等を示し、R2、R3およびR4は、それぞれアルキル基を示す。]で表される化合物は、低感受性虫種や難防除虫種に対して優れた殺虫活性を有する。よって、この化合物またはその農園芸上許容可能な酸付加塩は農園芸用殺虫剤として有用である。【選択図】なし