Compounds of formula I wherein X is S, SO or SO2; X1 is O, S or NR3; R3 is C1-C4 alkyl; R1 is C1-C4 alkyl, C1-C4 haloalkyl, C3-C6 cycloalkyl or C3-C6 cycloalkyl, C1-C4 alkyl; R2 is halogen, C1-C6 haloalkyl, C1-C4 haloalkylsulfanyl, C1-C4 haloalkylsulfinyl, C1-C4 haloalkylsulfonyl or C1-C6 haloalkoxy; and R3 and R4, independently from each other, are hydrogen or C1-C6 alkyl; and the agrochemically acceptable salts, stereoisomers, enantiomers, tautomers and N-oxides of those compounds, can be used as insecticides.
