The invention relates to novel compounds of the formula (I), in which R1, R2, R3, R4, A1, A2 and n have the above-mentioned meanings, to agrochemical formulations containing the compounds according to formula (I), to agrochemical formulations containing the compounds according to formula (I) and to their use as acaricides and/or insecticides for controlling animal pests, primarily arthropods and in particular insects and arachnids.