To provide a pesticidal composition which controls a pest undesirable for cultivation of a useful crop plant or a useful plant. A pesticidal composition comprising the following (component A) and the following (component B) as active ingredients: (component A): one or more compounds selected from 3-arylphenyl sulfide derivatives represented by the formula [I]: (component A): wherein R is a C 2 -C 6 alkyl group which may be substituted, or the like, each of B 0 , B 1 , B 2 and B 3 which are independent of one another, is a hydrogen atom, a halogen atom or a haloalkyl group, n is an integer of from 0 to 2, and Ar is a phenyl group, a pyrazolyl group or a triazolyl group, (component B): one or more compounds selected from the group consisting of triazamate, butocarboxim, butoxycarboxim, chromafenozide, halofenozide, cyflumetofen, prallethrin, acetoprole, ethiprole, methamidophos, flonicamid, pyridalyl, flufenerim, flubendiamide, tebufenozide, fenazaquin and cyenopyrafen.
