Novel 3-acylaminobenzanilides of the formula (I)wherein R1 represents phenyl which may be substituted or a 5-member or 6-member heterocyclic ring group, which may be substituted, containing at least one hetero-atom selected from the group consisting of N, O, and SR2 represents halogen, C1-6 alkyl, or C1-6 haloalkylR3 represents C1-6 haloalkyl, C1-6 haloalkoxy, C1-6 haloalkylthio, C1-6 haloalkylsulfinyl, or C1-6 haloalkylsulfonylR4 represents halogen, C1-6 alkyl, or C1-6 haloalkylX represents halogen, C1-6 alkyl, or C1-6 haloalkyl andn represents 0 or 1 and the compounds are used as insecticides,and a use of the new compounds as insecticides.
