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 sericea ( Provancher, 1875 ) (New SJN: Hokubei-mame-togari-himebachi) ( Figs 16A–C ) Mesostenus sericeus Provancher, 1875: 264 . Description . See Townes (1983) . Material examined . JAPAN : KPM-NK 55019, F, Nagano Pref. , Outaki Vil., M . Ontake-san, Tanohara, 13 . VI. 2015, K. Watanabe leg. Distribution . Japan (Honshu), Canada , and USA . Fig. 15. Bathythrix thomsoni ( Kerrich, 1942 ) , KPM-NK 81675, female from Japan ― A, lateral habitus; B, head, frontal view; C, head, mesosoma, and metasoma, dorsal view. Fig. 16. Bathythrix sericea ( Provancher, 1875 ) , KPM-NK 55019, female from Japan ― A, lateral habitus; B, head, frontal view; C, head, mesosoma, wings, and metasoma, dorsal view. Bionomics . Unknown.