Compounds of formula (I), Q-(CH2)a-(X1)b-Q1-Q2-C(X2)-N(R1)(R2), wherein Q is an aryl radical, X1 is oxy, thio, sulphinyl or sulphonyl, X2 is oxygen or sulphur, Q1 is a cyclopropanediyl radical, Q2 is an arylene radical, and R1 and R2 are either a hydrogen atom or a hydrocarbon radical, or one of groups R3-C=X3, (R3)2-P=X3, T2-R5 ou S(O)j-N(R6)(R7) wherein X3 is an oxygen atom or a sulphur atom, T2 is a bivalent oxy, carbonyl or oxycarbonyl group, and j is 0, 1 or 2; a preparation method therefor, and use thereof as pesticides.