A compound represented by a formula (II), an N-oxide compound, or a salt thereof:wherein R1 is a hydrogen atom, a substituted or unsubstituted C1-6 alkyl group, or a halogeno group； R2 is a substituted or unsubstituted 5- to 6-membered heteroaryl group； R3 is a substituted or unsubstituted C6-10 aryl group or a substituted or unsubstituted 5- to 10-membered heteroaryl group； Y is an oxygen atom, a nitrogen atom, or a sulfur atom； A1, A2, A3 and A4 are each independently a carbon atom or a nitrogen atom, provided that two or more of A1 to A4 do not represent nitrogen atoms at the same time； X is a substituent； n represents the number of chemically acceptable substituents represented by X, and is any one of integers of 0 to 5； and when n is 2 or more, the substituents X may be the same or different from each other.
