The present invention has an excellent control effect against harmful arthropods, and has the formula (I): [wherein R2 represents a C1-C6 alkyl group or the like, which may be substituted with one or more halogen atoms, n represents 0 or the like, R3 represents a C1-C6 chain type hydrocarbon group which may have one or more substituents selected from group B, q represents 0 or the like, and Het represents the formula Het1 or A heterocyclic compound represented by the formula Het2, A1 represents a nitrogen atom or CR6, and Q2 represents an oxygen atom, etc., and intermediates thereof, and the compounds and groups described in the specification ( There is provided a composition containing one or more components selected from the group consisting of a), group (b), group (c), group (d) and group (e).本発明は、有害節足動物に対して優れた防除効果を有する、式(I):[式中、R2は1以上のハロゲン原子で置換されていてもよいC1-C6アルキル基等を表し、nは0等を表し、R3は群Bより選ばれる1以上の置換基を有していてもよいC1-C6鎖式炭化水素基等を表し、qは0等を表し、Hetは式Het1又は式Het2で示される基を表し、A1は窒素原子又はCR6を表し、Q2は酸素原子等を表す]で示される複素環化合物、およびその中間体、並びに該化合物と明細書中に記載する群(a)、群(b)、群(c)、群(d)および群(e)からなる群より選ばれる1種以上の成分とを含有する組成物を提供する。