The invention relates to novel compounds of the formula (I) or (I') in which R1, R2, R3, Aa, Ab, Ac, Ad, Ae, Q and n have the definitions given above, to the use thereof as acaricides and/or insecticides for controlling animal pests and to processes and intermediates for the preparation thereof.本發明係關於新穎之式(I)或(I')化合物其中R1、R2、R3、Aa、Ab、Ac、Ad、Ae、Q及n具有前述定義,關於其等作為殺蟎蟲劑及/或殺昆蟲劑以控制動物害蟲之用途,及關於其等之製備方法及製備之中間體。