Abstract: The present invention provides a miticide that brings about a significantly remarkable mite controlling effect over a long period of time. The miticide of the present invention contains (a) an acylacetonitrile compound represented by Formula (1): wherein R1 is —C(O)ZR2; R2 is a C1-6 alkyl, C1-4 haloalkyl, C2-4 alkenyl, C2-4 alkynyl, (C1-6 alkoxy)C1-4 alkyl, (C1-4 alkylthio)C1-4 alkyl, or benzyl group; Z is an oxygen or sulfur atom; X and Y independently represent a halogen atom or a C1-6 alkyl or C1-4 haloalkyl group; m and n independently represent an integer from 1 to 3; and each m X's and each n Y's may be the same or different, and (b) chlorfenapyr.

Abstract: The acylacetonitrile compound of the invention is represented by the formula (1): wherein R1 represents —C(O)ZR2; R2 represents C1-6 alkyl, C1-4 haloalkyl or the like; Z represents oxygen or sulfur; X and Y independently represent halogen, C1-6 alkyl or C1-4 haloalkyl; and m and n are independently an integer of 1 to 3. The acylacetonitrile compound of the invention exhibits excellent miticidal and ovicidal activities for mites over a long period. Therefore, the acylacetonitrile compound of the invention is useful as a miticide.

Abstract: The acylacetonitrile compound of the invention is represented by the formula (1): 1

Abstract: A pyrazole derivative represented by the formula (1) is low in toxicity and persistence and yet has an extremely high insecticidal efficacy ##STR1## wherein A is CH, N or C-halogen atom, R.sup.1 is hydrogen atom, lower alkyl, lower haloalkyl, benzyl or phenyl, R.sup.2 is lower alkyl, lower haloalkyl, lower alkenyl, lower alkynyl, benzyl or phenyl, R.sup.3 is hydrogen atom, a halogen atom lower alkyl, lower haloalkylthio, phenyl, cyano, nitro or amino, R.sup.4 is halogen atom, R.sup.5 is lower haloalkyl, R.sup.6 is hydrogen atom, lower alkyl, lower haloalkyl or benzyl, R.sup.1 and R.sup.6 being not hydrogen atoms at the same time, l is 0 or 1, m is 0 or 1 and n is a number of 0 to 2.