Three new species of Quadrastichus Girault (Hymenoptera, Eulophidae) from China with a key to Chinese species.

Six species of Quadrastichus Girault (Eulophidae: Tetrastichinae) from China are reviewed, including three new species: Q.longisetasp. nov., Q.flavomaculatussp. nov., Q.longiscapussp. nov. and one new country record, Q.vacuna (Walker, 1839). New distributional data for Q.anysis (Walker, 1839) and Q.sajoi (Szelényi, 1941), and a key to the Chinese species of Quadrastichus based on females, are included.

A new species of Entedon Dalman (Hymenoptera, Eulophidae) and three newly recorded species from China.

In this paper, a new species of Entedon Dalman, E.flavifemursp. nov. is described from Tibet and three species, E.albifemur Kamijo, E.crassiscapus Erdös, and E.nomizonis Kamijo are reported from China for the first time. A detailed description and illustrations of the new species are provided, as well as diagnoses and illustrations of the three newly recorded species.

Four new species of Diglyphomorphomyia Girault (Hymenoptera, Eulophidae) from China, with a key to Chinese species.

Four new species of Diglyphomorphomyia Girault, D.depressa sp. nov., D.fossa sp. nov., D.hainana sp. nov., and D.octoseta sp. nov., are described from China. A key to the eight species of the genus Diglyphomorphomyia occurring in China is provided.

On the genus Coccophagus Westwood (Hymenoptera, Aphelinidae) from Xishuangbanna Rainforest. Contribution I: Two new species of the Coccophagusvarius group, with an identification key and phylogenetic analysis.

Two new species belonging to the varius group of Coccophagus, C.breviclavulus sp. nov. and C.perlucidus sp. nov., are described from Xishuangbanna Rainforest (China, Yunnan). Coccophagusanchoroides (Huang) and C.yunnana Wang, Huang & Polaszek are recorded. A tentative key to world species of this group is provided. Partial nuclear ribosomal 28S-D2 of these four species and other six species were sequenced and subjected to a phylogenetic analysis. Phylogeny of C.varius group is discussed.

A new species and three newly recorded species of Tetrastichinae (Hymenoptera, Eulophidae) from China.

Five species of five genera in Tetrastichinae (Hymenoptera, Eulophidae) from China are reviewed, including one new species, Mestocharellaqingdaoensis sp. nov., and three new country record species: Nesolynxthymus (Girault, 1916), Holcotetrastichusrhosaces (Walker, 1839), and Peckelachertusdiprioni Yoshimoto, 1970. New distributional data for Ceratoneuraindi Girault, 1917 are provided.

Two new species and a new record of the Encarsialongifasciata-group (Hymenoptera, Aphelinidae) from Malaysia and China.

Background: The genus Encarsia Förster, 1878, which is the largest genus of the family Aphelinidae, contains 453 valid species worldwide. Most species of Encarsia with known biology are primary endoparasitoids of Aleyrodidae and Diaspididae. New information: Species of the Encarsialongifasciata-group from Malaysia and China are reviewed. This is the first record of this group from Malaysia. Two new species, E.borneensis Geng & Li sp. n. and E.pauroseta Geng & Li sp. n., are described and illustrated. Encarsialongifasciata is newly recorded from Malaysia (Borneo). An updated key to the longifasciata-group species (females) worldwide is provided.

Two new species of Deutereulophus Schulz (Hymenoptera, Eulophidae) from China, with a key to Chinese species.

Two new species of Deutereulophus Schulz, D.felix sp. nov. and D.daguisiensis sp. nov., are described from China. A key to species of Deutereulophus known from China is provided.

Two new species of Hemiptarsenus Westwood (Hymenoptera, Eulophidae) from China, with a key to Chinese species.

Two new species of Hemiptarsenus Westwood, H.tianshuiensis sp. nov. and H.longjiangensis sp. nov., are described from China. New distributional data for H.jilinus Tao, 2021 are provided, and a key to Chinese species of the genus is given based on females.

Three new species of Stenomesius Westwood (Hymenoptera, Eulophidae) from China, with a key to Chinese species.

Three new species of Stenomesius Westwood, S.guanshanensis sp. nov., S.hani sp. nov., and S.harbinensis sp. nov., are described from China. A key to all species of the genus Stenomesius in China is provided.

Three new species, and new distributional data, of Haltichella (Hymenoptera, Chalcididae) from China.

Five species of Haltichella (Hymenoptera, Chalcididae) from China are reviewed, including three new species, H.bimaculata Wang & Li, sp. nov., H.bomiana Wang & Li, sp. nov., H.strigata Wang & Li, sp. nov. Haltichellaclavicornis (Ashmead) is newly recorded from China and H.nipponensis Habu is newly recorded from Heilongjiang, Shanxi, Shandong, Xizang, Guangdong and Yunnan Provinces in China. A key to the Chinese species of the Haltichella is provided.

A new species of Asecodes Förster (Hymenoptera, Eulophidae) and first record of A. reticulatum (Kamijo) from China, with a key to Chinese species.

A new species of Asecodes Förster, A. medogense sp. nov. is described from Tibet, China and A. reticulatum (Kamijo) is reported from China for the first time. A key to all known species of genus Asecodes in China is provided.

Two new species of Neotrichoporoides Girault (Hymenoptera, Eulophidae) from China and a key to Chinese species.

Seven species of Neotrichoporoides Girault from China are reviewed, including two new species: N. basiflavus sp. nov., N. flavothorax sp. nov. and two new country record species: N. cavigena Graham, 1991, N. szelenyii (Erdös, 1951). New distributional data for N. mediterraneus Graham, 1986, N. nyemitawus (Rohwer, 1921) and N. viridimaculatus (Fullaway, 1955) are provided and a key to Chinese species is given based on females.

Two new species of Paraphytis (Hymenoptera, Aphelinidae) from Southwest China.

Two new species of Paraphytis Compere, P. bannaensis sp. nov. and P. pseudovittatus sp. nov., are described from the Xishuangbanna Rainforest (Southwest China). A key to species from China based on females is provided.

Four new species of Closterocerus Westwood (Hymenoptera, Eulophidae) from China, with a key to Chinese species.

Four new species of Closterocerus Westwood, C. rectisulcus sp. nov., C. shaanxiensis sp. nov., C. separatus sp. nov. and C. unifasciatus sp. nov. are described from China, each with a distinct pattern on the fore wings, and belonging to subgenus Closterocerus. A key to all species of the genus Closterocerus in China is provided.

A new species of Oomyzus Rondani (Hymenoptera, Eulophidae) and first record of O. gallerucae (Fonscolombe) from China, with a key to Chinese species.

Oomyzus flavotibialis sp. nov. is described from Liaoning and Shandong provinces, China. Oomyzus gallerucae (Fonscolombe) is reported for the first time from China. A key to Chinese species of Oomyzus is provided.

Key to Chinese species of Copidosoma (Hymenoptera: Encyrtidae), with new records and three new species.

Six species of Copidosoma (Hymenoptera: Encyrtidae) from Southwestern China are reviewed, including three new species (C. heinitane sp. nov., C. linzhiensis sp. nov., C. longchuane sp. nov.) and two species newly recorded from China (C. longiclavatum Kazmi Hayat and C. recurvariae Sharkov). Copidosoma serricorne (Dalman) is newly recorded from Xizang, southwestern part of China. A key to all the Chinese species of the genus based on females is given.

Two new species of Centrodora (Hymenoptera, Aphelinidae) from China, with a key to Chinese species.

Two new species of Centrodora Förster, C. crassiscapasp. n. and C. pellucidasp. n., are described from China. A key to species from China based on females is given.

The Encarsia flavoscutellum-group key to world species including two new species from China (Hymenoptera, Aphelinidae).

Two new species of Encarsia flavoscutellum-group, E. baoshana Li & Geng, sp. n. and E. longchuana Li & Geng, sp. n. are described from China, and photomicrographs are provided to illustrate morphological characters of the new species. A key to all six described species of the E. flavoscutellum-group is given.

A new species, first report of a male and new distributional records for three species of Pteroptrix (Hymenoptera: Aphelinidae) from China.

BACKGROUND: The Chinese fauna of Pteroptrix currently includes 26 species, of wihich 19 species were described originally as new from China: 2 by Howard (1907), 2 by Compere (1953), 1 by Flanders (1966), 1 by Viggiani and Ren (1986), 4 by Huang (1991), 4 by Huang et al. (1992), 1 by Viggiani and Ren (1993), 4 by Huang (1994). NEW INFORMATION: Pteroptrix pedicellatasp. n. is described in detail and illustrated; the male of P. processa (Huang) is reported for the first time. New distributional data for three species, P. leptocera (Huang), P. orientalis (Silvestri) and P. processa (Huang), are also provided from China.

Five new species of genus Encarsia Förster from China (Hymenoptera: Aphelinidae).

Five new species of Encarsia Förster, E. dianensis sp. nov., E. hayati sp. nov., E. biseta sp. nov., E. huangi sp. nov., and E. yunnana sp. nov. are described from China. All share a clear asetose area around the stigmal vein of the fore wing, and a key to the Chinese species of Encarsia having such a fore wing area is given based on females. Photomicrographs are provided to illustrate morphological characters of the new species.