Taxonomic and Zoogeographic Notes on Japanese Orthocentrinae (Hymenoptera, Ichneumonidae), with Descriptions of Four New Species Author Watanabe, Kyohei Kanagawa Prefectural Museum of Natural History, 499 Iryuda, Odawara, Kanagawa 250 – 0031, Japan watanabe-k@nh·kanagawa-museum·jp text Bulletin of the Kanagawa Prefectural Museum (Natural Science) 2023 2023-03-28 52 7 44 journal article 296841 10.5281/zenodo.11283244 b9f71976-9af1-46a9-ab31-a2e72a353865 2189-6720 11283244 3EF5E302-218F-4AED98C3-726441EE48DB Subgenus Dicolus Förster, 1869 Dicolus Förster, 1869: 171 . Type species: Dicolus insectator Förster, 1871 (= Megastylus impressor Schiødte, 1838 ). Designated by Viereck (1914) . In this study, I newly record this subgenus from Japan based on three species, M. ( Dicolus ) excubitor ( Förster, 1871 ) , M. ( D. ) impressor Schiødte, 1838 , and M. ( D. ) pectoralis ( Förster, 1871 ) .