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Abstract

The present invention provides an insecticidal or acaricidal composition having an excellent pesticidal effect and a high safety, containing, as an active ingredient, a pyrazolyl compound of the following general formula (I): 1 wherein A represents a hydrogen atom; an alkyl group which may be substituted; an alkenyl group which may be substituted; an alkynyl group which may be substituted; a tri-substituted silyl group substituted with an alkyl group and/or an aryl group: an aryl group which may be substituted; or a heterocyclic group which may be substituted; B represents a single bond; a group of the formula: --(G.sup.1).sub.n--G.sup.2--(G.sup.1).sub.m-- wherein G.sup.1represents an oxygen atom, a sulfur atom, a sulfinyl group or a sulfonyl group, G.sup.2 represents an alkylene group, an alkenylene group or an alkynylene group, and n and m are independent from each other and represent 0 or 1; carbonyl group; a group of the formula: --CH.sub.2--O--N.dbd.C(R.sup.3)-- wherein R.sup.3 represents a hydrogen atom, an alkyl group or a haloalkyl group; or a group of the formula: --CH.dbd.N--O--(CR.sup.3R.sup.4).sub.n-- wherein R.sup.3 and R.sup.4 each represents a hydrogen atom, an alkyl group or a haloalkyl group; and n is 0 or 1, R.sup.1 represents a hydrogen atom; a halogen atom, an alkyl group which may be substituted; an alkenyl group which may be substituted; an alkynyl group which may be substituted; an alkoxyl group which may be substituted; or an aryl group which may be substituted, R.sup.2 represents a hydrogen atom; an alkyl group; a haloalkyl group; or an aryl group which may be substituted, and D represents a group of the formula: --C(.dbd.Y)COX wherein X represents a hydroxyl group, an alkoxyl group or an alkylamino group, Y represents a group of the formula: CH--(G.sup.3).sub.n--G.sup.4-- wherein G.sup.3 represents an oxygen atom or a sulfur atom, G.sup.4 represents an alkyl group or a haloalkyl group, and n represents 0 or 1, a group of the formula: N--O--G.sup.4 wherein G.sup.4 represents an alkyl group or a haloalkyl group; or a group of the formula: --N(R.sup.5)CO.sub.2G.sup.5 wherein R.sup.5 represents an alkyl group, an alkenyl group, an alkynyl group, an alkylthioalkyl group or an alkoxyalkyl group, and G.sup.5 represents an alkyl group.

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First Claim