title: A taxonomic study of Chinese species of the insidiosus group of Metaphycus (Hymenoptera, Encyrtidae).
abstract: In this paper, twelve insidiosus-group species of the genus Metaphycus Mercet from China are reviewed. Five species, M. corniae sp. n., M. cylindricus sp. n., M. deltoideus sp. n., M. transversus sp. n. and M. yaanensis sp. n., are described as new to science. A key to the females of these species is given to facilitate species recognition. Photomicrographs are provided to illustrate morphological characters of these species. All specimens, unless otherwise specified, are deposited in the National Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing.
authors.affiliation: Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Forestry, Northeast Forestry University, Harbin, 150040, China.
authors.forename: Cheng-De
authors.initials: CD
authors.lastname: Li
authors.affiliation: Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Yan-Zhou
authors.initials: YZ
authors.lastname: Zhang
keywords: Chalcidoidea; China; natural enemy; new species; parasitoids