| abstract |
halogen substituted pyrazole derivatives as pest control agents the invention relates, inter alia, to halogen substituted compounds of the general formula (i) in which the radicals a1-a4, t, n, w, q, r1 and z1-z3 have the meanings defined in the description. processes for the preparation of the compounds of the formula (i) and possible intermediate products for the preparation of these compounds are also described. the compounds according to the invention are particularly suitable for controlling insects, arachnids and nematodes in agriculture and ectoparasites in veterinary medicine. (i) |