(hetero)arylamide compound and pest control agent

A compound represented by Formula (I) or a salt of the compound,

• in Formula (I),
• Ar represents a substituted or unsubstituted C6 to C10 aryl group, or a substituted or unsubstituted 5- or 6-membered heteroaryl group,
• L1 represents a single bond, an oxygen atom, or a sulfur atom,
• L2 represents a single bond, or a substituted or unsubstituted C1 or C2 alkylene group,
• X1 represents a cyano group, or a substituted or unsubstituted thiocarbamoyl group,
• X2 represents a hydrogen atom, a halogeno group, a substituted or unsubstituted C1 to C6 alkyl group, a hydroxyl group, or a substituted or unsubstituted C1 to C6 alkoxy group,
• X3 represents a halogeno group, a substituted or unsubstituted C1 to C6 alkyl group, a substituted or unsubstituted C1 to C6 alkoxy group, or a cyano group,
• A represents a nitrogen atom or CX4,
• X4 represents a hydrogen atom, a halogeno group, a substituted or unsubstituted C1 to C6 alkyl group, a substituted or unsubstituted C1 to C6 alkoxy group, or a cyano group,
• R1 represents a hydrogen atom, or a substituted or unsubstituted C1 to C6 alkyl group,
• R2a represents a substituted or unsubstituted C1 to C6 alkyl group,
• R2b represents a hydrogen atom, or a substituted or unsubstituted C1 to C6 alkyl group,
• where R2a and R2b may be combined with each other to form a substituted or unsubstituted C2 to C5 alkylene group, and
• Y represents a substituted or unsubstituted C1 to C6 alkyl group, a substituted or unsubstituted C6 to C10 aryl group, or a substituted or unsubstituted 5- or 6-membered heteroaryl group.