present invention are those wherein:R.sup.1 and R.sup.2 are a halogen atom,R.sup.3 is 4-haloalkylR.sup.4 is lower haloalkyl and R.sup.5 is amino.Preferred insecticide is 1-[2,6-Cl.sub.2 4-CF.sub.3 phenyl] 3-CN 4-[SO--CF.sub.3 ]5-NH.sub.2 pyrazole (compound A).The preparation of compounds of formula (I) may be made according to any process described in patent applications WO 87/3781, 93/6089, 94/2