The invention relates to novel compounds of the formula (I) or (I') in which R1, Aa, Ab, Ac, Ad, 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.本發明係關於新穎的式(I)或(I')化合物其中R1、Aa、Ab、Ac、Ad、Q和n具有上述所給予之定義,其作為殺蟎劑及/或殺昆蟲劑供防治動物害蟲之用途,以及用於其製備之方法和中間物。