A compound of the formula I wherein R 1 is H, C 1 -C 6 alkyl, C 1 -C 6 cyanoalkyl, aminocarbonylC 1 -C 6 alkyl, hydroxycarbonylC 1 -C 6 alkyl, C 1 -C 6 nitroalkyl, trimethylsilaneC 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 haloalkenyl, C 2 -C 6 alkynyl, C 2 -C 6 haloalkynyl, C 3 -C 4 cycloalkylC 1 -C 2 alkyl-, C 3 -C 4 cycloalkylC 1 -C 2 alkyl- wherein the C 3 -C 4 cycloalkyl group is substituted with 1 or 2 halogen atoms, oxetan-3-yl-CH 2 -, benzyl or benzyl substituted with halogen or C 1 -C 6 haloalkyl; R 2 is selected from phenyl, pyridine, pyrimidine, pyrazine, pyridazine, and phenyl, pyridine, pyrimidine, pyrazine and pyridazine, each of which is substituted with one to three substituents, provided the substituent(s) are not on either carbon adjacent to the carbon C=X is attached, and each substituent is independently selected from: C 1 -C 3 alkyl, C 1 -C 3 haloalkyl, C 1 -C 3 haloalkylthio, C 1 -C 3 alkoxy, C 1 -C 3 haloalkoxy, halo, SF 5, CN, CONH 2, and C NH 2; R 3 is C 1 -C 3 alkyl or C 1 -C 3 haloalkyl; A 1 is CR 4b or N; R 4b is hydrogen, or halogen; R 4a is cyano, or C 1 -C 3 haloalkoxy; R 5 is halogen, amino, (C 1 -C 3 alkyl)amino, di(C 1 -C 3 alkyl)amino, hydroxy, cyano, C 3 -C 4 halocycloalkyl, C 2 -C 6 haloalkenyl, C 1 -C 4 haloalkylsulfanyl, C 1 -C 4 haloalkylsulfinyl, C 1 -C 4 haloalkylsulfonyl, C 1 -C 4 alkylsulfanyl, C 1 -C 4 alkylsulfinyl, C 1 -C 4 alkylsulfonyl, (C 1 -C 3 alkyl)sulfonylamino, (C 1 -C 3 alkyl)sulfonyl(C 1 -C 3 alkyl)amino, (C 1 -C 3 alkyl)NHC, (C 1 -C 3 alkyl) 2 NC, (C 3 -C 6 cycloalkyl)NHC, (C 3 -C 6 cycloalkyl)(C 1 -C 3 alkyl)NC, (C 1 -C 3 alkyl)C (C 1 -C 3 alkyl)N, (C 1 -C 3 alkyl)C NH, diphenylmethanimine, or C 1 -C 3 haloalkoxy; or agrochemically acceptable salts, stereoisomers, enantiomers, tautomers and N-oxides of the compounds of formula I. R 1 is H, C 1 -C 6 alkyl, C 1 -C 6 cyanoalkyl, aminocarbonylC 1 -C 6 alkyl, hydroxycarbonylC 1 -C 6 alkyl, C 1 -C 6 nitroalkyl, trimethylsilaneC 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 haloalkenyl, C 2 -C 6 alkynyl, C 2 -C 6 haloalkynyl, C 3 -C 4 cycloalkylC 1 -C 2 alkyl-, C 3 -C 4 cycloalkylC 1 -C 2 alkyl- wherein the C 3 -C 4 cycloalkyl group is substituted with 1 or 2 halogen atoms, oxetan-3-yl-CH 2 -, benzyl or benzyl substituted with halogen or C 1 -C 6 haloalkyl; R 2 is selected from phenyl, pyridine, pyrimidine, pyrazine, pyridazine, and phenyl, pyridine, pyrimidine, pyrazine and pyridazine, each of which is substituted with one to three substituents, provided the substituent(s) are not on either carbon adjacent to the carbon C=X is attached, and each substituent is independently selected from: C 1 -C 3 alkyl, C 1 -C 3 haloalkyl, C 1 -C 3 haloalkylthio, C 1 -C 3 alkoxy, C 1 -C 3 haloalkoxy, halo, SF 5, CN, CONH 2, and C NH 2; R 3 is C 1 -C 3 alkyl or C 1 -C 3 haloalkyl; A 1 is CR 4b or N; R 4b is hydrogen, or halogen; R 4a is cyano, or C 1 -C 3 haloalkoxy; R 5 is halogen, amino, (C 1 -C 3 alkyl)amino, di(C 1 -C 3 alkyl)amino, hydroxy, cyano, C 3 -C 4 halocycloalkyl, C 2 -C 6 haloalkenyl, C 1 -C 4 haloalkylsulfanyl, C 1 -C 4 haloalkylsulfinyl, C 1 -C 4 haloalkylsulfonyl, C 1 -C 4 alkylsulfanyl, C 1 -C 4 alkylsulfinyl, C 1 -C 4 alkylsulfonyl, (C 1 -C 3 alkyl)sulfonylamino, (C 1 -C 3 alkyl)sulfonyl(C 1 -C 3 alkyl)amino, (C 1 -C 3 alkyl)NHC, (C 1 -C 3 alkyl) 2 NC, (C 3 -C 6 cycloalkyl)NHC, (C 3 -C 6 cycloalkyl)(C 1 -C 3 alkyl)NC, (C 1 -C 3 alkyl)C (C 1 -C 3 alkyl)N, (C 1 -C 3 alkyl)C NH, diphenylmethanimine, or C 1 -C 3 haloalkoxy; or agrochemically acceptable salts, stereoisomers, enantiomers, tautomers and N-oxides of the compounds of formula I.