Provided is a novel noxious organism control agent, particularly an insecticide or a miticide, which is a condensed heterocyclic compound represented by formula (1), or a salt of the condensed heterocyclic compound or an N-oxide of the condensed heterocyclic compound and the salt. In formula (1), D substituted by -S(O)nR1 represents a ring represented by D1, D2 or D3 Q represents a ring represented by Q1, Q2, Q3 or Q4 G1, G2, G3, G4, G5, A2, A3, A4, A5 and A8 each represent a nitrogen atom, etc. T1 and A1 each represent an oxygen atom, etc. R1 represents C1-C6 alkyl, C1-C6 haloalkyl, etc. R2, R3, R6, R7 and Y6 each represent a hydrogen atom, a halogen atom, C1-C6 alkyl, etc. n represents an integer of 0, 1 or 2.本發明之課題係提供一種新穎之有害生物防除劑,尤其是殺蟲劑或殺蟎劑。一種以式(1)表示之稠雜環化合物或其鹽或該等之N-氧化物,[式中,被-S(O)nR1取代之D表示以D1、D2或D3之任一個表示之環,Q表示以Q1、Q2、Q3或Q4之任一個表示之環,G1、G2、G3、G4、G5、A2、A3、A4、A5及A8分別獨立表示氮原子等,T1及A1分別獨立表示氧原子等,R1表示C1-C6烷基、C1-C6鹵烷基等,R2、R3、R6、R7及Y6分別獨立表示氫原子、鹵素原子、C1-C6烷基等,n表示0、1或2之整數]。
