The invention relates inter alia to compounds of the general formula (I)in which the A1-A4, T, n, W, Q, R1 and B1-B4 radicals are each as defined in the description. Also described are processes for preparing the compounds of the formula (I). The inventive compounds are especially suitable for controlling insects, arachnids and nematodes in agriculture, and ectoparasites in veterinary medicine.本發明係關於尤其是通式(I)化合物其中,A1-A4,T,n,W,Q,R1及B1-B4基團各自係定義如說明書中。本文中亦說明者為製備式(I)化合物的方法。本發明化合物尤其適用於控制於農業上之昆蟲,蜘蛛及線蟲,以及於獸醫學之體外寄生蟲。