A new inquiline cynipid species, Ufo rufiventris sp. nov.（Hymenoptera： Cynipidae）, is fully described and illustrated with its diagnosis and host gall identified.
A taxonomic review is provided for the Section I of the inquiline gallwasp genus Synergus, including the description of a new species from China, S. deqingensis Pujade-Villar, Wang ＆ Chen sp. nov. and redescription of all previously known species of the section from the that region. Synergus jezoensis Uchida ＆ Sakagami, 1948, a species previously considered of uncertain status from Japan, is treated herein as a valid species, and is redescribed and reported for the first time from China. Andricus mukaigawae（Mukaigawa, 1913） and its inquiline, S. japonicus, are reported for the first time from China. A key is provided to all four East Palearctic species in Section I of Synergus.
Juli Pujade-VillarYi-Ping WangXue-Xin ChenJun-Hua He
The genus Heteribalia Sakagami（1949） is a member of the small parasitic wasp family Ibaliidae（Hymenoptera： Cynipoidea）, and all known species of this genus are from China and its neighbouring countries. In this paper, we report two new species, Heteribalia miltopronotum sp. nov. and Heteribalia sichuanensis sp. nov., and distribution for H. divergens Maa（1949）. These new discoveries update the known distribution of this genus in China from the known east coast areas to a much more extensive region between the eastern coast and Sichuan Province in central China. A key to all known Heteribalia species is provided.
Miao CHAIZhiwei LIUYao NIUYingying DONGYiping WANG
A new species of gall wasps, Andricus henryi Pujade-Villar, Wang ＆ Guo sp. nov. is described on Castanea henryi from China. Additionally, the first gall wasp host of Synergus castanea is mentioned. Diagnosis, distribution, and biology of this new species are included and illustrated. A species of Andricus is mentioned for the first time in a Castanea host.
Juli PUJADE-VILLAWRui GUOYiping WANGMar FERRER-SUAY
New species of gallwasps, Andricus flavus sp. nov., and its inquiline related to its gall, Saphonecrusfabris sp. nov. are described. Both species are included and illustrated their distribution and biology here. The type materials are deposited in the Parasitic Hymenoptera Collection, Zhejiang Agricultural and Forest University, Lin＇an, China, and University of Barcelona Barcelona, Spain.
