The present invention provides: a compound having an excellent controlling effect against a harmful arthropod and represented by formula (I): and a composition containing the compound, wherein, in formula (I), Q represents a group represented by formula Q1； a group represented by formula Q2 or a group represented by formula Q3； a combination of A2 and A3 represents a combination in which A2 is a nitrogen atom and A3 is CR4b, or a combination in which A2 is CR4a and A3 is a nitrogen atom； Z represents an oxygen atom or a sulfur atom； and T represents a C2-C10 chain hydrocarbon group having one or more halogen atoms, etc.
