Abstract: A fused heterocyclic compound the formula (1): wherein A1 represents —NR8—, and the like; A2 represents a nitrogen atom, and the like; A3 represents a nitrogen atom, and the like; R1 represents a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group X, and the like; R2, R3, R4, and R5 are same or different and represent independently a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, and the like; R6 and R7 are same or different and represent independently a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group X, and the like; R8 represents a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group W, and the like; n represents 0, 1 or 2. The compound has an excellent activity of controlling pests.

Abstract: A fused heterocyclic compound the formula (1): wherein A1 represents —NR8—, and the like; A2 represents a nitrogen atom, and the like; A3 represents a nitrogen atom, and the like; R1 represents a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group X, and the like; R2, R3, R4, and R5 are same or different and represent independently a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, and the like; R6 and R7 are same or different and represent independently a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group X, and the like; R8 represents a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group W, and the like; n represents 0, 1 or 2. The compound has an excellent activity of controlling pests.

Abstract: A fused heterocyclic compound the formula (1): wherein A1 represents —NR8—, and the like; A2 represents a nitrogen atom, and the like; A3 represents a nitrogen atom, and the like; R1 represents a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group X, and the like; R2, R3, R4, and R5 are same or different and represent independently a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, and the like; R6 and R7 are same or different and represent independently a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group X, and the like; R8 represents a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group W, and the like; n represents 0, 1 or 2. The compound has an excellent activity of controlling pests.

Abstract: A noxious arthropod controlling composition comprising a heterocyclic compound represented by the formula (1) [wherein, A1 and A2 represent ?C(R6)—, nitrogen and so on, R1 represents a halogen and so on, R3 and R4 represent optionally substituted C1 to C4 chain hydrocarbon group and so on, R5 represents a hydrogen and so on, n represents 0 or 1] as an active ingredient has an excellent effect for controlling noxious arthropods.

Abstract: A fused heterocyclic compound the formula (1): wherein A1 represents —NR8—, and the like; A2 represents a nitrogen atom, and the like; A3 represents a nitrogen atom, and the like; R1 represents a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group X, and the like; R2, R3, R4, and R5 are same or different and represent independently a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, and the like; R6 and R7 are same or different and represent independently a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group X, and the like; R8 represents a C1-C6 chain hydrocarbon group optionally having one or more atoms or groups selected from Group W, and the like; n represents 0, 1 or 2. The compound has an excellent activity of controlling pests.

Abstract: A noxious arthropod controlling composition comprising a heterocyclic compound represented by the formula (1) [wherein, A1 and A2 represent ?C(R6)—, nitrogen and so on, R1 represents a halogen and so on, R3 and R4 represent optionally substituted C1 to C4 chain hydrocarbon group and so on, R5 represents a hydrogen and so on, n represents 0 or 1] as an active ingredient has an excellent effect for controlling noxious arthropods.

Abstract: The present invention provides a pyrazole compound of formula (a): a noxious arthropod pests controlling composition containing the compound shown by the formula (a) as an active ingredient; and a method for controlling noxious arthropod pests comprising applying an effective amount of the compound shown by the formula (a).

Abstract: A thiadiazole compound represented by the formula (I): wherein R is a hydrogen atom, an optionally substituted C1-C7 chain hydrocarbon group etc., Z is an oxygen atom or a sulfur atom, X is a —NR2R3 group etc., R2 and R3 each independently are a hydrogen atom, a C1-C4 alkyl group, a C3-C4 alkenyl group, a C1-C4 alkoxy group, or a phenyl group, or R2 and R3 bind to each other at the ends thereof to form a C2-C7 alkanediyl group, has excellent controlling effect on a noxious arthropod.

Abstract: The present invention provides a pyrazole compound of formula (a): a noxious arthropod pests controlling composition containing the compound shown by the formula (a) as an active ingredient; and a method for controlling noxious arthropod pests comprising applying an effective amount of the compound shown by the formula (a).

Abstract: A pyrazole compound of formula (a): wherein R1 represents C1-C4 alkyl or trifluoromethyl, R2 represents C1-C4 alkyl, R3 represents hydrogen or C1-C6 alkyl; R4 represents halogen and so on, m represents 0 to 4 integer; R5 represents halogen and so on, n represents 0 to 4 integer; R6 and R7 are same or different and represents hydrogen, halogen or methyl; X represents oxygen or R8O—N; R8 represents hydrogen, C1-C6 alkyl and the like; has an excellent controlling activity against noxious arthropods.

Abstract: A pyrazole compound of formula (a): wherein R1 represents C1-C4 alkyl or trifluoromethyl, R2 represents C1-C4 alkyl, R3 represents hydrogen or C1-C6 alkyl; R4 represents halogen and so on, m represents 0 to 4 integer; R5 represents halogen and so on, n represents 0 to 4 integer; R6 and R7 are same or different and represents hydrogen, halogen or methyl; X represents oxygen or R8O—N; R8 represents hydrogen, C1-C6 alkyl and the like; has an excellent controlling activity against noxious arthropods.