abstract |
A fused heterocyclic compound or an N-oxide thereof represented by formula (1) has an excellent control effect on pests. [In the formula: A 1 represents N or the like; A 2 represents NR 6 or the like; A 3 represents CR 12 or the like; R 1 represents a C1-C6 chain hydrocarbon group or the like; R 2 and R 4 are the same or different, and each represent a C1-C3 alkyl group, which may have one or more halogen atoms, or the like; R 3 represents a C1-C6 chain hydrocarbon group or the like; R 6 represents the same C1-C6 chain hydrocarbon group or the like; R 9 , R 10 , R 11 and R 12 each form a ring in conjunction with the carbon atom to which one set of either R 9 and R 10 , R 10 and R 11 , or R 11 and R 12 is attached; and n represents 0, 1 or 2.] |