A compound of formula wherein A 1, A 2, A 3 and A 4 are each independently C-X, wherein each X may be the same or different; R 1 is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkyl-C NH 2, or C 1 -C 4 alkylcarbonyl; R 2 is hydrogen, halogen, C 1 -C 4 alkyl, C 1 -C 4 alkyl-C NH 2, C 1 -C 6 haloalkyl or cyano; G 1 is oxygen or sulfur; X is hydrogen, halogen, cyano, C 1 -C 4 alkyloxy, C 1 -C 4 alkyl or C 1 -C 4 haloalkyl; Q 1 is aryl or heterocyclyl, each optionally substituted by one to five R 3 substituents, which may be the same or different; R 3 is selected from cyano, amino, 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 and phenyl; Q 2 is a moiety of formula Y 1 and Y 5 are each independently selected from hydrogen, 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 and C 1 -C 3 haloalkylsulfonyl; Y 3 is C 1 -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 each independently selected from hydrogen, halogen and C 1 -C 4 alkyl; or an agrochemically acceptable salt or N-oxides thereof. A 1, A 2, A 3 and A 4 are each independently C-X, wherein each X may be the same or different; R 1 is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkyl-C NH 2, or C 1 -C 4 alkylcarbonyl; R 2 is hydrogen, halogen, C 1 -C 4 alkyl, C 1 -C 4 alkyl-C NH 2, C 1 -C 6 haloalkyl or cyano; G 1 is oxygen or sulfur; X is hydrogen, halogen, cyano, C 1 -C 4 alkyloxy, C 1 -C 4 alkyl or C 1 -C 4 haloalkyl; Q 1 is aryl or heterocyclyl, each optionally substituted by one to five R 3 substituents, which may be the same or different; R 3 is selected from cyano, amino, 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 and phenyl; Q 2 is a moiety of formula Y 1 and Y 5 are each independently selected from hydrogen, 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 and C 1 -C 3 haloalkylsulfonyl; Y 3 is C 1 -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 each independently selected from hydrogen, halogen and C 1 -C 4 alkyl; or an agrochemically acceptable salt or N-oxides thereof.