1. An agricultural pest control composition comprising: a condensed heterocyclic compound of the formula (1): wherein: A represents —NR—, an oxygen atom or a sulfur atom； A represents a nitrogen atom or = CR—； A represents a nitrogen atom or = CR—； R represents a hydrocarbon a C1-C6 chain group, optionally having one (one) or more atoms or groups selected from Group X, or a C3-C6 alicyclic hydrocarbon group, optionally having one (one) or several atoms or groups, selected from Group Y； R , R, R and R are the same or different and represent a C1-C6 hydrocarbon group, optionally having one or more halogen atoms, a phenyl group, optionally having one (one) or more atoms or groups selected from Group Z, a 5-membered heterocyclic group, optionally having one (one ) or several atoms or groups selected from Group Z, a 6-membered heterocyclic group optionally having one (one) or several atoms or groups selected from Group Z, -OR, -S (O) R, -NRR, -COR , -C (O) R, a cyano group, a nitro group, a halogen atom, -SF or a water atom of the genus, provided that at least two of R, R, R, and R represent a hydrogen atom； R and R are the same or different and represent a C1-C6 hydrocarbon group, optionally having one (one) or more atoms or groups selected from the Group X, a phenyl group, optionally having one (one) or more atoms or groups selected from Group Z, a 5-membered heterocyclic group, optionally having one (one) or several atoms or groups, selected from Group Z, a 6-membered heterocyclic group optionally having one n (one) or more atoms or groups selected from Group Z, -OR, -S (O) R, -S (O) NRR, -NRR, -NRCOR, -NRC (O1. Композиция для борьбы с сельскохозяйственными вредителями, содержащая:конденсированное гетероциклическое соединение формулы (1):где:Aпредставляет -NR-, атом кислорода или атом серы；Aпредставляет атом азота или =CR-；Aпредставляет атом азота или =CR-；Rпредставляет углеводородную группу с С1-С6 цепью, необязательно имеющую один(одну) или несколько атомов или груп
