Kyohei Watanabe, Rikio Matsumoto. Revision of the genus Xanthopimpla Saussure, 1892 (Hymenoptera, Ichneumonidae, Pimplinae) from Japan. DEUTSCHE ENTOMOLOGISCHE ZEITSCHRIFT. 2021. 68. 2. 269-297
Matthias Riedel, Kyohei Watanabe. The genus Coelichneumon Thomson in Japan (Hymenoptera, Ichneumonidae, Ichneumoninae). Zootaxa. 2021. 4948. 4. 501-545
Toru Taniwaki, Atsushi Tamura, Kyohei Watanabe. Species richness, abundance and diversity of ichneumonid wasps in Japanese beech forests impacted by sika deer and sawfly herbivory. Entomological Science. 2020. 23. 4. 393-404
Kyohei Watanabe. Notes on the genus Pellis Sheng & Sun, 2014 (Hymenoptera, Ichneumonidae, Banchinae), with a new record from Japan. Zootaxa. 2020. 4877. 2. 386-390
Kyohei Watanabe. Taxonomic study of the tribe Banchini (Hymenoptera: Ichneumonidae: Banchinae) from Japan. Japanese Journal of Systematic Entomology, Supplementary Series. 2020. 2. 1-58