Taxonomic and Zoogeographic Study of the Japanese Phygadeuontinae (Hymenoptera, Ichneumonidae), with Descriptions of 17 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) 2021 2021-03-30 50 55 136 https://doi.org/10.32225/bkpmnh.2021.50_55 journal article 300009 10.32225/bkpmnh.2021.50_55 70224806-ca38-47ca-bd8a-63da3ac532f9 2189-6720 12774639 DD695C62-DC2F-4D32-8D33-52648E28661D Bathythrix thomsoni ( Kerrich, 1942 ) (New SJN: Thomson-mame-togari-himebachi) ( Figs 15A–C , 62C ) Thysiotorus thomsoni Kerrich, 1942: 56 . Panargyrops aereus corsicator Aubert, 1961: 171 . Description . See Sawoniewicz (1980) . Materials examined . JAPAN : KPM-NK 81673 , F, Niigata Pref. , Sado Is. , Kanaishinbo , Hakuundai-Mt . Fig. 13. Bathythrix margaretae Sawoniewicz, 1980 , KPM-NK 55017, female from Japan ― A, lateral habitus; B, head, frontal view; C, head, mesosoma, and metasoma, dorsal view. Fig. 14. Bathythrix prothorax Momoi, 1970 , KPM-NK 81877, male from Japan ― A, lateral habitus; B, head, frontal view; C, head and anterior part of mesosoma, lateral view; D, head, mesosoma, and metasoma, dorsal view. Myoukenzan, 4. VIII. 2009 , K. Watanabe leg.; KPM-NK 81674 , F, ditto , 10. IX. 2010 ; KPM-NK 81675 , F, Hyogo Pref. , Kami Town , Niiya , Mikata kogen , 26. VI. – 18. VII. 2011 , S. Fujie leg. (MsT). Distribution . Japan * (Honshu); widely distributed in Palearctic region. Bionomics . Unknown in Japan . Various hosts like as microlepidoptera and braconids have been recorded (see Yu et al. , 2016 ). Remarks . This is the first record of this species from Japan .