| abstract |
"fused heterocyclic compound, its use, composition and method of controlling a harmful arthropod the present invention relates to a fused heterocyclic compound of formula (1): where, a1 and a2 represent a nitrogen atom or similar, r1, r2 , r3 and r4 represent a halogen atom or similar, r2 and r3 represent a halogen atom or similar, r5 represents a c1-c6 chain hydrocarbon group optionally substituted with one or more halogen atoms, or similar, r6 and r7 represent a c1-c4 chain hydrocarbon group substituted with one or more halogen atoms, or the like, en represents 0 or 1, and has an excellent harmful arthropod control effect. |