Claim 1: A harmful arthropod control agent characterized in that it contains an amide compound of the formula (1) [wherein X represents a nitrogen atom or a CH group； p represents 0 or 1； A represents a phenyl group that optionally has one or several atoms or groups selected from the group F, a cycloalkyl group C₃₋₆ that optionally has one or several atoms or groups selected from the group F, a pyridyl group that optionally has one or several atoms or groups selected from group F, a saturated heterocyclic group of 3 to 7 members that optionally has one or more atoms or groups selected from group F,a. One or more atoms selected from a group consisting of one oxygen atom and one sulfur atom or one or more heteromorphic atoms composed of one or more atoms or one or more non adjacent groups in a group consisting of one or more other atoms；several groups selected from the group consisting of a hydroxyl group and a C₁₋₃ alkoxy group (provided that A is a C₁₋₅ alkyl group that optionally has one or more groups selected from the group consisting of a hydroxyl group and an alkoxy group C₁₋₃P is (1)；R¹ and R² are the same or different and independently represent a C₁₋₃ alkyl group or a hydrogen group； R³ and R⁴ are the same or different and independently represent a C₁₋₃ alkyl group that optionally has one or more halogen atoms or a hydrogen atom； n represents 1 or 2； R⁵ and R⁶ are the same or different and independently represent a C₁₋₄ alkyl group that optionally has one or more halogen atoms, a halogen atom or a hydrogen atom； Y represents a simple bond or an oxygen atom, where when Y represents a simple bond,m represents 0 and Q represents a hydrocarbon group of chain C₁₋₈ having one or more atoms or groups selected from group C or a hydrocarbon group of chain C₃₋₈ and where when Y represents an oxygen atom, m represents any number an integer from 0 to 7 and Q represents a C₁₋₈ chain hydrocarbon group that optionally has one or more atoms or groups selected from group D o
