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The wasp genusMacroteleiaWestwood from China has been previously revised, but some species are only known from males. Here the females of two known species are described:M. carinigenaChen, Johnson, Masner & Xu andM. gracilisChen, Johnson, Masner & Xu. In addition, one species is redescribed:M. variegataKozlov & Kononova; and one species is described as new:Macroteleia xuiHong & Chen,sp. nov.Macroteleia ischtvaniKononova,syn. nov.is proposed as new synonym ofM. variegataKozlov & Kononova.

Two new species of Trigonalyidae are described from Tibet (SW China): Jezonogonalos nyingchiensis Chen & van Achterberg, sp. nov., and Taeniogonalos eurysoma Chen & van Achterberg, sp. nov. In total, seven species representing four genera are known from Tibet, and two of them are newly recorded from Tibet: Taeniogonalos bucarinata Chen, van Achterberg, He & Xu, 2014, and Teranishia crenulata Chen, van Achterberg, He & Xu, 2014.

The wasp genus Macroteleia Westwood from China has been previously revised, but some species are only known from males. Here the females of two known species are described: M. carinigena Chen, Johnson, Masner & Xu and M. gracilis Chen, Johnson, Masner & Xu. In addition, one species is redescribed: M. variegata Kozlov & Kononova; and one species is described as new: Macroteleia xui Hong & Chen, sp. nov.Macroteleia ischtvani Kononova, syn. nov. is proposed as new synonym of M. variegata Kozlov & Kononova.

A new species of the genus Pseudomegischus van Achterberg, Pseudomegischus yunnanensis sp. n., is described and illustrated from Yunnan Province, China. This is the second species of the genus reported from China. A modified section of the identification key to species of Pseudomegischus is added to include the new species.

A new species of Megischus Brullé from China, M. aplicatus sp. n., is described and illustrated. A key to the Chinese species of Megischus is added. The holotype is deposited in the Parasitic Hymenoptera Collection of Zhejiang University, Hangzhou.

Stephanidae Leach, 1815 (Hymenoptera: Stephanoidea) from China are revised. Five genera are reported from China: Foenatopus Smith, 1861; Megischus Brullé, 1846; Parastephanellus Enderlein, 1906; Schlettererius Ashmead, 1900; and Stephanus Jurine (in Panzer), 1801, and the genera are keyed. All the Chinese species are described and illustrated and new synonyms are established. Keys to species of the five genera occurring in China and adjacent regions are provided. Six species are new to science: Foenatopus brevimaculatus sp. n., F. maculiferus sp. n., F. yangi sp. n., Parastephanellus angulatus sp. n., P. brevicoxalis sp. n. and P. zhejiangensis sp. n. One species, Parastephanellus matsumotoi van Achterberg, 2006, is newly recorded from China. The following 9 new synonyms are proposed: Foenatopus aratifrons Enderlein, 1913 and F. yunnanensis Chao, 1964, new synonymys for F. annulitarsus Enderlein, 1913; F. cerviculatus (Chao, 1964) and F. chaoi Belokobylskij, 1995 for F. chinensis (Elliott, 1919); F. formosanus Enderlein, 1913 for F. cinctus (Matsumura, 1912); F. simillimus (Elliott, 1920) and F. trilineatus (Elliott, 1920) for F. flavidentatus (Enderlein, 1913); F. trilobatus (Elliott, 1920) for F. ruficollis (Enderlein, 1913); Parastephanellus austrochinensis Belokobylskij, 1995 for P. brevistigma Enderlein, 1913. A lectotype is designated for Diastephanus trilineatus Elliott, 1920.