The present invention provides: a compound which has a superior control effect on arthropod pests, and is represented by formula (I): [in the formula, A1 represents a nitrogen atom or the like, n represents 0, etc., q is 0, etc., G represents a C3-C8 aliphatic hydrocarbon group or the like optionally having one or more substituents selected from group E, R3a represents a C1-C6 linear hydrocarbon group or the like optionally having one or more substituents selected from group B, A2 represents a nitrogen atom or the like, A3 represents a nitrogen atom or the like, A4 represents a nitrogen atom or the like, T represents a C1-C10 linear hydrocarbon group or the like having one or more halogen atoms, and R2 represents a cyclopropyl group or the like]； and a composition containing said compound and one or more compounds selected from the group consisting of group (a), group (b), group (c), group (d), and group (e) described in the description.
