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 NR15, etc.; R1 represents a C1-C6 chain hydrocarbon group, etc., optionally substituted with 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 substituted with one or more atoms or groups selected from group X; R4 represents a C1-C6 chain hydrocarbon group, etc., optionally substituted with one or more atoms or groups selected from group W; and n represents 0, 1, or 2.