A compound of formula: wherein A 1, A 2, A 3 and A 4 are independently of one another C-X-R 3, or C-R 5, provided that at least one of A 1, A 2, A 3 and A 4 is C-X-R 3; R 1 and R 2 are independently of one another hydrogen, methyl or ethyl; G 1 and G 2 are each oxygen; R 3 is independently methyl or ethyl; X is oxygen; wherein R 5 is hydrogen; Q 1 is aryl or aryl substituted by one to five substituents R 6, which may be the same or different, or Q 1 is heterocyclyl or heterocyclyl substituted by one to five substituents R 6, which may be the same or different; wherein each R 6 is independently cyano, nitro, hydroxy, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 2 -C 4 alkenyl, C 2 -C 4 haloalkenyl, C 2 -C 4 alkynyl, C 2 -C 4 haloalkynyl, C 3 -C 6 cycloalkyl, C 3 -C 6 halocycloalkyl, C 1 -C 3 alkoxy, C 1 -C 3 haloalkoxy, C 1 -C 3 alkylthio, C 1 -C 3 haloalkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 haloalkylsulfinyl, C 1 -C 3 alkylsulfonyl, C 1 -C 3 haloalkylsulfonyl, C 1 -C 4 alkylamino, di-(C 1 -C 4 alkyl)amino, C 1 -C 4 alkylcarbonyl, C 1 -C 4 alkylcarbonyloxy, C 1 -C 4 alkoxycarbonyl, C 1 -C 4 alkylcarbonylamino or phenyl; and Q 2 is a moiety of formula or wherein Y 1 and Y 5 are independently of each other cyano, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy-C 1 -C 4 -alkyl, C 1 -C 3 alkylthio, C 1 -C 3 haloalkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 haloalkylsulfinyl, C 1 -C 3 alkylsulfonyl or C 1 -C 3 haloalkylsulfonyl; Y 3 is C 2 -C 6 perfluoroalkyl, C 1 -C 6 perfluoroalkylthio, C 1 -C 6 perfluoroalkylsulfinyl or C 1 -C 6 perfluoroalkylsulfonyl; Y 2 and Y 4 are independently of each other hydrogen, halogen or C 1 -C 4 alkyl; Y 6 and Y 9 are independently of each other cyano, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy-C 1 -C 4 -alkyl, C 1 -C 3 alkylthio, C 1 -C 3 haloalkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 haloalkylsulfinyl, C 1 -C 3 alkylsulfonyl or C 1 -C 3 haloalkylsulfonyl; Y 8 is C 1 -C 4 haloalkoxy, C 2 -C 6 perfluoroalkyl, C 1 -C 6 perfluoroalkylthio, C 1 -C 6 perfluoroalkylsulfinyl or C 1 -C 6 perfluoroalkylsulfonyl; Y 7 is hydrogen, halogen or C 1 -C 4 alkyl; or salts or N-oxides thereof. A 1, A 2, A 3 and A 4 are independently of one another C-X-R 3, or C-R 5, provided that at least one of A 1, A 2, A 3 and A 4 is C-X-R 3; R 1 and R 2 are independently of one another hydrogen, methyl or ethyl; G 1 and G 2 are each oxygen; R 3 is independently methyl or ethyl; X is oxygen; wherein R 5 is hydrogen; Q 1 is aryl or aryl substituted by one to five substituents R 6, which may be the same or different, or Q 1 is heterocyclyl or heterocyclyl substituted by one to five substituents R 6, which may be the same or different; wherein each R 6 is independently cyano, nitro, hydroxy, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 2 -C 4 alkenyl, C 2 -C 4 haloalkenyl, C 2 -C 4 alkynyl, C 2 -C 4 haloalkynyl, C 3 -C 6 cycloalkyl, C 3 -C 6 halocycloalkyl, C 1 -C 3 alkoxy, C 1 -C 3 haloalkoxy, C 1 -C 3 alkylthio, C 1 -C 3 haloalkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 haloalkylsulfinyl, C 1 -C 3 alkylsulfonyl, C 1 -C 3 haloalkylsulfonyl, C 1 -C 4 alkylamino, di-(C 1 -C 4 alkyl)amino, C 1 -C 4 alkylcarbonyl, C 1 -C 4 alkylcarbonyloxy, C 1 -C 4 alkoxycarbonyl, C 1 -C 4 alkylcarbonylamino or phenyl; and Q 2 is a moiety of formula or wherein Y 1 and Y 5 are independently of each other cyano, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy-C 1 -C 4 -alkyl, C 1 -C 3 alkylthio, C 1 -C 3 haloalkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 haloalkylsulfinyl, C 1 -C 3 alkylsulfonyl or C 1 -C 3 haloalkylsulfonyl; Y 3 is C 2 -C 6 perfluoroalkyl, C 1 -C 6 perfluoroalkylthio, C 1 -C 6 perfluoroalkylsulfinyl or C 1 -C 6 perfluoroalkylsulfonyl; Y 2 and Y 4 are independently of each other hydrogen, halogen or C 1 -C 4 alkyl; Y 6 and Y 9 are independently of each other cyano, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy-C 1 -C 4 -alkyl, C 1 -C 3 alkylthio, C 1 -C 3 haloalkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 haloalkylsulfinyl, C 1 -C 3 alkylsulfonyl or C 1 -C 3 haloalkylsulfonyl; Y 8 is C 1 -C 4 haloalkoxy, C 2 -C 6 perfluoroalkyl, C 1 -C 6 perfluoroalkylthio, C 1 -C 6 perfluoroalkylsulfinyl or C 1 -C 6 perfluoroalkylsulfonyl; Y 7 is hydrogen, halogen or C 1 -C 4 alkyl; Y 1 and Y 5 are independently of each other cyano, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy-C 1 -C 4 -alkyl, C 1 -C 3 alkylthio, C 1 -C 3 haloalkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 haloalkylsulfinyl, C 1 -C 3 alkylsulfonyl or C 1 -C 3 haloalkylsulfonyl; Y 3 is C 2 -C 6 perfluoroalkyl, C 1 -C 6 perfluoroalkylthio, C 1 -C 6 perfluoroalkylsulfinyl or C 1 -C 6 perfluoroalkylsulfonyl; Y 2 and Y 4 are independently of each other hydrogen, halogen or C 1 -C 4 alkyl; Y 6 and Y 9 are independently of each other cyano, halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy-C 1 -C 4 -alkyl, C 1 -C 3 alkylthio, C 1 -C 3 haloalkylthio, C 1 -C 3 alkylsulfinyl, C 1 -C 3 haloalkylsulfinyl, C 1 -C 3 alkylsulfonyl or C 1 -C 3 haloalkylsulfonyl; Y 8 is C 1 -C 4 haloalkoxy, C 2 -C 6 perfluoroalkyl, C 1 -C 6 perfluoroalkylthio, C 1 -C 6 perfluoroalkylsulfinyl or C 1 -C 6 perfluoroalkylsulfonyl; Y 7 is hydrogen, halogen or C 1 -C 4 alkyl;