The present invention provides: a compound represented by formula (I): [wherein A 1 represents a nitrogen atom or CR 4 ； R 4 represents a hydrogen atom or the like； R 1 represents a C2-C10 linear hydrocarbon group having at least one halogen atom, or the like； R 2 represents a C1-C6 alkyl group which may have at least one halogen atom, or the like； q represents 0, 1, 2 or 3； R 3 represents a C1-C6 linear hydrocarbon group which may have at least one halogen atom, or the like； p represents 0, 1, or 2； R 6 represents a C1-C6 alkyl group which may have at least one halogen atom, or the like； and n represents 0, 1, or 2] or an N-oxide compound thereof； and an arthropod pest control agent which comprises a compound represented by formula (I) and the like and an inert carrier and exhibits an excellent controlling effect against arthropod pests.
