3-Arylphenyl sulfide derivatives represented by general formula (I):

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(wherein R is a C₂-C₆ alkyl group, a C₂-C₆ alkenyl group, a C₂-C₆ alkynyl group or the like, B₀ to B₂ and B₃ are hydrogen atoms, halogen atoms, cyano groups, C₁-C₄ haloalkyl groups or the like, n is 0, 1 or 2, and Ar is a phenyl ring, a pyridine ring, a thiophene ring, a pyrazole ring or the like), and insecticides and miticides containing the 3-arylphenyl sulfide derivatives as an active ingredient.