A fused heterocyclic compound represented by formula (1) has an excellent pest control effect. (In the formula, R1 represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups that are selected from group X, or the like； R2, R3, R4 and R5 may be the same or different, and each represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups that are selected from group X, or the like； R6 represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups that are selected from group W, or the like； G1, G2, G3, G4 and G5 may be the same or different, and each represents a nitrogen atom or the like； Q represents an oxygen atom or a sulfur atom； and n represents 0, 1 or 2.)
