The fused heterocyclic compound represented by formula (1) has excellent effectiveness in pest control.In the formula (1), J represents formula J1, J2, J3, J4, J5 or J6 A1 A2 A3 A4 A5 B1 B2 B4 B5 and B6 each represent a nitrogen atom, etc. B3 represents NR5, etc. R1 represents a C1-C6 chain hydrocarbon group, etc., optionally having one or more atoms or groups selected from group X the pairs R2 and R3 and R5 and R6 are the same or different, and represent a C1-C6 chain hydrocarbon group, etc., optionally having one or more atoms or groups selected from group X R4 represents a C1-C6 chain hydrocarbon group, etc., optionally having one or more atoms or groups selected from group W and n represents 0, 1, or 2.
