An imidazopyridine-2-carboxamide derivative represented by a following formula: [in the formula, R 1 represents a C 1-6 alkyl group or a C 1-6 haloalkyl group; R 2 represents a hydrogen atom, a C 1-6 alkyl group, or a C 1-6 haloalkyl group; X represents an oxygen atom, a sulfur atom, or -SO 2 -; A 1, A 2, A 3, A 4, and A 5 each independently represents a nitrogen atom or C-R 3, wherein two of A 1, A 2, A 3, A 4, and A 5 are not nitrogen atoms at the same time, and at least one of A 1, A 2, A 3, A 4, and A 5 is C-R 3; R 3 s are the same or different from each other, and each R 3 represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, a C 1-6 haloalkyl group, a C 3-8 cycloalkyl group, a C 1-6 alkoxy group, a C 3-6 alkenyloxy group, a C 3-6 alkynyloxy group, a C 1-6 haloalkoxy group, a C 3-6 haloalkenyloxy group, a C 3-6 haloalkynyloxy group, a C 1-6 alkylthio group, a C 1-6 alkylsulfinyl group, a C 1-6 alkylsulfonyl group, a C 1-6 haloalkylthio group, a C 1-6 haloalkylsulfinyl group, a C 1-6 haloalkylsulfonyl group, a nitro group, a cyano group, a phenyl group optionally substituted with one to four R 5 s, a phenoxy group optionally substituted with one to four R 6 s, or a triazolyl group substituted with one or two R 7 s, or when two R 3 s are substituted on adjacent two carbon atoms, the two R 3 s optionally form a saturated or unsaturated 5- or 6-membered ring together with the adjacent two carbon atoms to which the R 3 s are respectively bound, and R 5, R 6, and R 7 each independently represents a halogen atom, a C 1-6 alkyl group, a C 1-6 haloalkyl group, a C 3-8 cycloalkyl group, a C 1-6 alkoxy group, a C 1-6 haloalkoxy group, a C 1-6 alkylthio group, a C 1-6 alkylsulfinyl group, a C 1-6 alkylsulfonyl group, a C 1-6 haloalkylthio group, a C 1-6 haloalkylsulfinyl group, or a C 1-6 haloalkylsulfonyl group; R 4 s are the same or different from each other and each represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, a C 1-6 haloalkyl group, a C 3-8 cycloalkyl group, a C 1-6 alkoxy group, a nitro group, or a cyano group; n represents an integer of 0 to 2; and m represents an integer of 0 to 4], or its N-oxide or salt. R 1 represents a C 1-6 alkyl group or a C 1-6 haloalkyl group; R 2 represents a hydrogen atom, a C 1-6 alkyl group, or a C 1-6 haloalkyl group; X represents an oxygen atom, a sulfur atom, or -SO 2 -; A 1, A 2, A 3, A 4, and A 5 each independently represents a nitrogen atom or C-R 3, wherein two of A 1, A 2, A 3, A 4, and A 5 are not nitrogen atoms at the same time, and at least one of A 1, A 2, A 3, A 4, and A 5 is C-R 3; R 3 s are the same or different from each other, and each R 3 represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, a C 1-6 haloalkyl group, a C 3-8 cycloalkyl group, a C 1-6 alkoxy group, a C 3-6 alkenyloxy group, a C 3-6 alkynyloxy group, a C 1-6 haloalkoxy group, a C 3-6 haloalkenyloxy group, a C 3-6 haloalkynyloxy group, a C 1-6 alkylthio group, a C 1-6 alkylsulfinyl group, a C 1-6 alkylsulfonyl group, a C 1-6 haloalkylthio group, a C 1-6 haloalkylsulfinyl group, a C 1-6 haloalkylsulfonyl group, a nitro group, a cyano group, a phenyl group optionally substituted with one to four R 5 s, a phenoxy group optionally substituted with one to four R 6 s, or a triazolyl group substituted with one or two R 7 s, or when two R 3 s are substituted on adjacent two carbon atoms, the two R 3 s optionally form a saturated or unsaturated 5- or 6-membered ring together with the adjacent two carbon atoms to which the R 3 s are respectively bound, and R 5, R 6, and R 7 each independently represents a halogen atom, a C 1-6 alkyl group, a C 1-6 haloalkyl group, a C 3-8 cycloalkyl group, a C 1-6 alkoxy group, a C 1-6 haloalkoxy group, a C 1-6 alkylthio group, a C 1-6 alkylsulfinyl group, a C 1-6 alkylsulfonyl group, a C 1-6 haloalkylthio group, a C 1-6 haloalkylsulfinyl group, or a C 1-6 haloalkylsulfonyl group; R 4 s are the same or different from each other and each represents a hydrogen atom, a halogen atom, a C 1-6 alkyl group, a C 1-6 haloalkyl group, a C 3-8 cycloalkyl group, a C 1-6 alkoxy group, a nitro group, or a cyano group; n represents an integer of 0 to 2; and m represents an integer of 0 to 4],