Ethelurgus episyrphicola Kusigemati, 1983 (SJN: Hosohirataabu-togari-himebachi) (Figs 30A–D) Ethelurgus episyrphicola Kusigemati, 1983: 110. Ethelurgus politus Townes, 1983: 135. Syn. nov. Description. See Kusigemati (1983) and Townes (1983). Materials examined. JAPAN: KPM-NK 81913, F, Hokkaido, Otofuke Town, Kibougaoka-koen, 25. VI. 2017, K. Watanabe leg.; KPM-NK 81915, M, Saitama Pref., Urawa, Tajima, 9. IV. 1999, T. Nambu leg.; KPM-NK 81916, F, Saitama Pref., Yorii town, Mure, 17. V. 2001, T. Nambu leg. (YPT); KPM-NK 81911, F, Tokyo, Izuoshima Is., Ohshima Town, Mt. Omaru, Tsubakinomori, 5–31. X. 2012, K. Tsujii leg. (MsT); KPM-NK 81918, F, Tokyo, Miyakejima Is., Miyake Vil., Tsubota-rindo, 25. VIII. – 22. IX. 2012, K. Tsujii leg. (MsT); KPM-NK 81917, F, Tokyo, Hachijojima Is., Oogakyo, 16–21. V. 2012, K. Tsujii leg. (MsT); KPM-NK 81919–81921, 3 M, Tokyo, Akiruno City, Ninomiya, Tamagawa-riverside, 3. V. 2010, K. Watanabe leg.; KPM-NK 81914, M, Kanagawa Pref., Yokosuka City, Fukadadai, 11. IV. 1997, I. Kawashima leg.; KPM-NK 81926, F, Kanagawa Pref., Hakone Town, Ochudo, 21. VI. 2010, M. Takakuwa leg.; KPM-NK 81925, M, Yamanashi Pref., Koushu City, Yanagisawa-toge, 5. VIII. 2008, K. Watanabe leg.; TMNH, F, Aichi Pref., Toyohashi City, Imura Town, Takayama, 2. VI. – 6. VI. 2019, S. Morishita leg. (MsT); KPM-NK 81922, M, Toyama Pref., Toyama City, Kamegai, 28. VII. – 4. VIII. 2009, M. Watanabe et al. leg. (MsT); KPM-NK 81923, F, Fukui Pref., Arashi, 23. IX. 1973, T. Tano leg.; AEIC, F (holotype of E. politus), Tokushima Pref., Nishino, 18. VI. 1932, K. Sato leg.; KPM-NK 81912, F, Saga Pref., Tara Town, Mt. Taradake, 20. V. 2011, T. Yamauchi leg.; SEHU, F (holotype of Et. episyrphicola), Kagoshima Pref., Kagoshima City, 18. XII. 1962, em. from Episyrphus balteatus, K. Kusigemati leg.; KPM-NK 81924, F, Kagoshima Pref., Tokunoshima Is., Tete, Mt. Amagi-dake, 27. III. 2011, K. Watanabe leg. Distribution. Japan (Hokkaido *, Honshu, Izuoshima Is.*, Miyakejima Is.*, Hachijojima Is.*, Shikoku, Kyushu, and Tokunoshima Is.*), China, and India. Bionomics. Host record: Episyrphus balteatus (De Geer, 1776) (Diptera, Syrphidae) (Kusigemati, 1983). Remarks. This is the first record of this species from Hokkaido, Izuoshima Is., Miyakejima Is., Hachijojima Is., and Tokunoshima Is.

Published as part of Watanabe, Kyohei, 2021, Taxonomic and Zoogeographic Study of the Japanese Phygadeuontinae (Hymenoptera, Ichneumonidae), with Descriptions of 17 New Species, pp. 55-136 in Bulletin of the Kanagawa Prefectural Museum (Natural Science) 50 on pages 91-92, DOI: 10.32225/bkpmnh.2021.50_55, http://zenodo.org/record/12774639