Two new species of Olesicampe Förster (Hymenoptera, Ichneumonidae) with a key to species known from China and Oriental Region.

Two new species of Olesicampe Förster, 1869, O. minense Sheng & Khalaim, sp. nov. and O. matouense Sheng & Khalaim, sp. nov., collected from Fujian and Jiangxi provinces of the Oriental part of China, are described and illustrated. A key to the species of Olesicampe known in China and Oriental region is provided.

The genus Megastylus Schidte (Hymenoptera, Ichneumonidae, Orthocentrinae) in China with a key to the species of China and Oriental Region.

Three new species of Megastylus Schidte, 1838 (Ichneumonidae, Orthocentrinae), M. (Dicolus) mentouense Sheng Li, sp. nov. collected from Mentougou, Beijing, M. (D.) flavicornis Sheng Li, sp. nov. from Shennongjia National Natural Reserve, Hubei and M. (Megastylus) yindianense Sheng Li, sp. nov. from Minquan, Henan, are described and illustrated. A taxonomic key to the species of Megastylus known from China and the Oriental Region is provided.

First Oriental record of genus Neostroblia Heinrich (Hymenoptera, Ichneumonidae, Ctenopelmatinae) with description of one new species.

One new species, Neostroblia melana Sheng Watanabe sp. nov., collected from Fanjingshan National Natural Reserve, Guizhou Province, China, is reported. A key to species of Neostroblia known in the world is provided. A key to similar genera of Mesoleiini is also provided.

A new species of Dicaelotus Wesmael (Hymenoptera, Ichneumonidae, Ichneumoninae) parasitizing Asclerobia sinensis (Lepidoptera) in seed pods of Caragana spp.

A new species of Ichneumoninae, Dicaelotus caraganae Sheng & Li, sp. nov.,is described and illustrated. Specimens were reared from the cocoon of Asclerobia sinensis (Caradja, 1937) (Lepidoptera, Pyralidae), from Hangjinqi, Inner Mongolia Autonomous Region, China. The new species is characterized by face very short, median length shorter than clypeus; clypeus 2.9 × as wide as long, apical margin with weak median convex; area basalis of propodeum very short, lateral carinae indistinct; hind coxa partly irregularly black; fourth and subsequent metasomal tergites black. A key to species of Dicaelotus known in China is provided.

The genus Alcochera Frster (Hymenoptera, Ichneumonidae, Ctenopelmatinae) in China with a key to world species.

Two new species of Alcochera (Ichneumonidae, Ctenopelmatinae, Mesoleiini), Alcochera flavoclypeata Sheng Sun, sp. nov. collected from Labagoumen Natural Reserve, Huairou, Beijing, and A. truncata Sheng Sun, sp. nov. from Wugongshan Natural Reserve, are described and illustrated. An updated taxonomic key to world species of Alcochera is provided.

First record of the genus Aneuclis Förster (Hymenoptera, Ichneumonidae) from China.

A new species of the genus Aneuclis Förster, 1869, A. flavopedes Sheng, Zhou Wei, sp.nov. collected from the field of the Research Station of Liaohe-River Plain Forest Ecosystem, Zhangwu, Liaoning Province, China, is described and illustrated. The new species is inserted into the key provided by Khalaim (2004).

A review of the genus Apophysius Cushman (Ichneumonidae: Phygadeuontinae), with descriptions of six new species.

The phygadeuontine genus Apophysius (Ichneumonidae) is reviewed for the first time. Six new species are described, A. baolocensis Pham, Matsumoto Broad sp. nov., A. constrictus Pham, Matsumoto Broad sp. nov. and A. taynguyenensis Pham, Matsumoto Broad sp. nov. from the Central Highlands of Vietnam, A. latus Pham, Matsumoto, Konishi, Sheng Broad sp. nov. from China and Vietnam, A. takasukai Pham, Konishi Broad sp. nov. from the Cameron Highlands, Malaysia, and A. pentaceratops Broad sp. nov. from Sarawak, Malaysia. A key to the nine known species of the genus Apophysius is included.

First record of the genus Microstenus Szépligeti (Hymenoptera: Ichneumonidae: Cryptinae) from China, with description of one new species and a key to world species.

The genus Microstenus Szépligeti, 1916 (Hymenoptera: Ichneumonidae: Cryptinae) is newly recorded from China based on a new species, Microstenus rufithorax Sheng, Li Sun, sp. nov., collected from Guangxi Zhuang Autonomous Region, Oriental part of China. Illustrations of the new species are provided. A key to the world species of this genus is also provided.

A new species of genus Endasys Förster (Ichneumonidae, Cryptinae) parasitizing Pristiphora (Tenthredinidae) and a key to species from China.

A new species of Cryptinae, Endasys pristiphorae Sheng, sp.n. reared from cocoons of the tenthredinid sawflies Pristiphora erichsonii (Hartig), P. xibei Wei Xia and P. (Stauronematus) compresicornis (Hartig) in Ningxia, Shandong and Shan'xi, China, is described and illustrated. A key to species of Endasys known from China is provided.

A new species of Campoletis Förster (Hymenoptera, Ichneumonidae) with a key to species known from China, Japan and South Korea.

A new species of the genus Campoletis Förster, 1869, C. deserticola Sheng & Zhou, sp. nov., collected from Zhangwu, Liaoning Province and Songshan National Natural Reserve, Yanqing, Beijing, China, is described and illustrated. A taxonomic key to the species of Campoletis known in China is provided.

Ichnoverruca nom. nov., a replacement name for the genus Verruca Sheng amp; Sun, 2018 (Hymenoptera, Ichneumonidae) non Schumacher, 1817.

The name Verruca was proposed for a new genus of wasps described by Sheng Sun (2018) with the type species Verruca dentia Sheng Sun, 2018 in the family Ichneumonidae (Hymenoptera). However, it cannot be used as a valid generic name due to homonymy as the genus Verruca was established by Schumacher (1817) in the barnacle family Verrucidae (Cirripedia, Verrucomorpha). Verruca Schumacher is a valid generic name in Verrucomorpha.

First record of Hylophasma Townes (Hymenoptera, Ichneumonidae, Cryptinae) from Palaearctic region.

A new species of Cryptinae, Hylophasma luica Sheng, Li Wang, sp.n., collected from Shandong Province, in the southern border of the Eastern Palaearctic Region of China, is described and illustrated. The new species is placed within the existing key to species.

Taxonomic study of the genus Townesia Ozols (Hymenoptera, Ichneumonidae, Pimplinae) with description of a new species from China and a key to world species.

Five species of the genus Townesia Ozols are reported. One, Townesia sulcata Sheng & Li, sp. nov. collected from Liaoning province, China, is new to science. In addition, digital images and a taxonomic key to the all species of Townesia are presented.

A new species of genus Hoplocryptus Thomson (Hymenoptera, Ichneumonidae, Cryptinae) and a key to species from Oriental and Eastern Palaearctic regions.

A new species of Cryptinae, Hoplocryptusqingdaoensis Sheng, Wang & Schwarz, sp. nov. collected from Qingdao, Shandong Province, in the north border of oriental part of China, is described and illustrated. A key to species known from the Oriental and Eastern Palaearctic regions is provided.

A new species and new records of the genus Alexeter Förster (Hymenoptera, Ichneumonidae, Ctenopelmatinae) from Beijing with a key to Chinese species.

A new species, Alexeterbeijingensis Sheng, sp. nov., and two new records for China, A.angularis (Uchida, 1952) and A.shakojiensis Uchida, 1930, collected in Mentougou, Beijing, belonging to the tribe Mesoleiini of the subfamily Ctenopelmatinae (Hymenoptera, Ichneumonidae), are reported. A key to the six species of Alexeter known from China is given.

The genus Rhynchobanchus Kriechbaumer in China, with descriptions of a new species and first record of the genus from Oriental region (Hymenoptera, Ichneumonidae, Banchinae).

Six species and two subspecies of the genus Rhynchobanchus Kriechbaumer, 1894 are reported from China, of which one, Rh. flavomaculatus Sheng, sp. n., is a new species and the first record of the genus from the Oriental Region. Rhynchobanchus flavopictus orientalis Kuslitzky, 2007 is a new Chinese record. A key to the species of Rhynchobanchus occurring in China is provided.

A new genus and species of subfamily Banchinae (Hymenoptera, Ichneumonidae) from China.

A new genus, Verruca Sheng Sun gen. nov., of the ichneumonid tribe Atrophini, subfamily Banchinae is described for one new species, Verruca dentia Sheng Sun, sp. nov. The species was collected from Shandong and Jiangxi Provinces, situated near the northern border of the Oriental part of China. The new genus is placed within the existing key to genera. A key to the genera of Atrophini, with the apical portion of the ovipositor with ridges, is also provided.

Taxonomic notes on Exetastes fukuchiyamanus Uchida, 1928 (Hymenoptera, Ichneumonidae, Banchinae), with description of a new species from Japan and China.

Exetastes fukuchiyamanus Uchida, 1928 (Ichneumonidae, Banchinae) is redescribed and its taxonomic status and distribution in Japan and China is reviewed. A new species, E. compressus sp. nov., is described based on specimens collected from China and Japan.

Discovery of the genus Glyphicnemis Förster in the Oriental Region (Hymenoptera, Ichneumonidae, Cryptinae).

The genus Glyphicnemis Förster, 1869 is newly recorded from the Oriental Region based on a new species, Glyphicnemis ganica Sheng & Li, sp. n., collected from Jiangxi Province, in the oriental part of China. This species resembles G. watanabei (Uchida, 1930) from Japan in the coloration of flagellum and the structure and colouration of metasomal tergites, but it can be distinguished by the density and length of clypeal setae, the large propodeal spiracle, and the sculpture of area superomedia. Illustrations of G. ganica and G. watanabei are provided. A key to the Asian species of this genus is also given.

A new species of Poemenia Holmgren with a key to species known from China and the Eastern Palaearctic Region (Hymenoptera, Ichneumonidae, Poemeniinae).

A new species of Poemeniinae, Poemenia quercusia Sun & Sheng, sp. n., is described and illustrated. Specimens were reared from twigs of Quercus wutaishanica Blume in Haicheng, Liaoning province, P.R. China. A key to species known from China and the Eastern Palaearctic Region is provided.