A compound of formula where A 1, A 2, A 3 and A 4 are independently of each other C-H, C-R 5 or nitrogen; G 1 is oxygen or sulfur; R 1 is hydrogen, C 1 -C 8 alkyl, C 1 -C 8 alkoxy-, C 1 -C 8 alkylcarbonyl-, C 1 -C 8 alkoxycarbonyl- or C 1 -C 8 haloalkoxycarbonyl-; R 2 is a group of formula where L is a single bond or C 1 -C 6 alkylene; and Y 1, Y 2 and Y 3 are independently of another CR 8 R 9, C=O, C=N-OR 10, N-R 10, S, SO, SO 2, S=N-R 10 or SO=N-R 10, provided that at least one of Y 1, Y 2 or Y 3 is not CR 8 R 9, C=O or C=N-OR 10; R 3 is C 1 -C 8 haloalkyl; R 4 is aryl or aryl substituted by one to five R 7, or heteroaryl or heteroaryl substituted by one to five R 7; each R 5 is independently halogen, cyano, nitro, C 1 -C 8 alkyl, C 1 -C 8 haloalkyl, C 2 -C 8 alkenyl, C 2 -C 8 haloalkenyl, C 2 -C 8 alkynyl, C 2 -C 8 haloalkynyl, C 3 -C 10 cycloalkyl, C 1 -C 8 alkoxy-, C 1 -C 8 haloalkoxy-, C 1 -C 8 alkylthio-, C 1 -C 8 haloalkylthio-, C 1 -C 8 alkylsulfinyl-, C 1 -C 8 haloalkylsulfinyl-, C 1 -C 8 alkylsulfonyl- or C 1 -C 8 haloalkylsulfonyl-, or two R 5 on adjacent carbon atoms together form a -CH=CH-CH=CH- bridge; R 6 is hydrogen, C 1 -C 8 haloalkyl or C 1 -C 8 alkyl; each R 7 is independently halogen, cyano, nitro, C 1 -C 8 alkyl, C 1 -C 8 haloalkyl, C 2 -C 8 alkenyl, C 2 -C 8 haloalkenyl, C 2 -C 8 alkynyl, C 2 -C 8 haloalkynyl, hydroxy, C 1 -C 8 alkoxy-, C 1 -C 8 haloalkoxy-, mercapto, C 1 -C 8 alkylthio-, C 1 -C 8 haloalkylthio-, C 1 -C 8 alkylsulfinyl-, C 1 -C 8 haloalkylsulfinyl-, C 1 -C 8 alkylsulfonyl-, C 1 -C 8 haloalkylsulfonyl-, C 1 -C 8 alkylcarbonyl-, C 1 -C 8 alkoxycarbonyl-, aryl or aryl substituted by one to five R 11, or heterocyclyl or heterocyclyl substituted by one to five R 11; each R 8 and R 9 is independently hydrogen, halogen, C 1 -C 8 alkyl or C 1 -C 8 haloalkyl; each R 10 is independently hydrogen, cyano, C 1 -C 8 alkyl, C 1 -C 8 haloalkyl, C 1 -C 8 alkylcarbonyl-, C 1 -C 8 haloalkylcarbonyl-, C 1 -C 8 alkoxycarbonyl-, C 1 -C 8 haloalkoxycarbonyl-, C 1 -C 8 alkylsulfonyl-, C 1 -C 8 haloalkylsulfonyl-, aryl-C 1 -C 4 alkylene- or aryl-C 1 -C 4 alkylene- where the aryl moiety is substituted by one to three R 12, or heteroaryl-C 1 -C 4 alkylene- or heteroaryl-C 1 -C 4 alkylene- where the heteroaryl moiety is substituted by one to three R 12; each R 11 and R 12 is independently halogen, cyano, nitro, C 1 -C 8 alkyl, C 1 -C 8 haloalkyl, C 1 -C 8 alkoxy-, C 1 -C 8 haloalkoxy- or C 1 -C 8 alkoxycarbonyl-; or a salt or N -oxide thereof. A 1, A 2, A 3 and A 4 are independently of each other C-H, C-R 5 or nitrogen; G 1 is oxygen or sulfur; R 1 is hydrogen, C 1 -C 8 alkyl, C 1 -C 8 alkoxy-, C 1 -C 8 alkylcarbonyl-, C 1 -C 8 alkoxycarbonyl- or C 1 -C 8 haloalkoxycarbonyl-; R 2 is a group of formula L is a single bond or C 1 -C 6 alkylene; and Y 1, Y 2 and Y 3 are independently of another CR 8 R 9, C=O, C=N-OR 10, N-R 10, S, SO, SO 2, S=N-R 10 or SO=N-R 10, provided that at least one of Y 1, Y 2 or Y 3 is not CR 8 R 9, C=O or C=N-OR 10; R 3 is C 1 -C 8 haloalkyl; R 4 is aryl or aryl substituted by one to five R 7, or heteroaryl or heteroaryl substituted by one to five R 7; each R 5 is independently halogen, cyano, nitro, C 1 -C 8 alkyl, C 1 -C 8 haloalkyl, C 2 -C 8 alkenyl, C 2 -C 8 haloalkenyl, C 2 -C 8 alkynyl, C 2 -C 8 haloalkynyl, C 3 -C 10 cycloalkyl, C 1 -C 8 alkoxy-, C 1 -C 8 haloalkoxy-, C 1 -C 8 alkylthio-, C 1 -C 8 haloalkylthio-, C 1 -C 8 alkylsulfinyl-, C 1 -C 8 haloalkylsulfinyl-, C 1 -C 8 alkylsulfonyl- or C 1 -C 8 haloalkylsulfonyl-, or two R 5 on adjacent carbon atoms together form a -CH=CH-CH=CH- bridge; R 6 is hydrogen, C 1 -C 8 haloalkyl or C 1 -C 8 alkyl; each R 7 is independently halogen, cyano, nitro, C 1 -C 8 alkyl, C 1 -C 8 haloalkyl, C 2 -C 8 alkenyl, C 2 -C 8 haloalkenyl, C 2 -C 8 alkynyl, C 2 -C 8 haloalkynyl, hydroxy, C 1 -C 8 alkoxy-, C 1 -C 8 haloalkoxy-, mercapto, C 1 -C 8 alkylthio-, C 1 -C 8 haloalkylthio-, C 1 -C 8 alkylsulfinyl-, C 1 -C 8 haloalkylsulfinyl-, C 1 -C 8 alkylsulfonyl-, C 1 -C 8 haloalkylsulfonyl-, C 1 -C 8 alkylcarbonyl-, C 1 -C 8 alkoxycarbonyl-, aryl or aryl substituted by one to five R 11, or heterocyclyl or heterocyclyl substituted by one to five R 11; each R 8 and R 9 is independently hydrogen, halogen, C 1 -C 8 alkyl or C 1 -C 8 haloalkyl; each R 10 is independently hydrogen, cyano, C 1 -C 8 alkyl, C 1 -C 8 haloalkyl, C 1 -C 8 alkylcarbonyl-, C 1 -C 8 haloalkylcarbonyl-, C 1 -C 8 alkoxycarbonyl-, C 1 -C 8 haloalkoxycarbonyl-, C 1 -C 8 alkylsulfonyl-, C 1 -C 8 haloalkylsulfonyl-, aryl-C 1 -C 4 alkylene- or aryl-C 1 -C 4 alkylene- where the aryl moiety is substituted by one to three R 12, or heteroaryl-C 1 -C 4 alkylene- or heteroaryl-C 1 -C 4 alkylene- where the heteroaryl moiety is substituted by one to three R 12; each R 11 and R 12 is independently halogen, cyano, nitro, C 1 -C 8 alkyl, C 1 -C 8 haloalkyl, C 1 -C 8 alkoxy-, C 1 -C 8 haloalkoxy- or C 1 -C 8 alkoxycarbonyl-; or a salt or N -oxide thereof.