A pesticidal composition comprising a carboxamide compound represented by following formula (A), wherein R1 represents a hydrogen atom or a methyl group, and R2 represents a methyl group, a difluoromethyl group or a trifluoromethyl group, and a diamide compound represented by following formula (B), wherein X1, X2, X3, X4 and X5 have the same meanings as defined in the specification, is provided by the present invention, and this composition has an excellent pesticidal effect.
