Tersilochus (Tersilochus) hokkaidoensis Khalaim, 2012 (Figs 50–54) Material examined. JAPAN. Hokkaido I.: Sapporo, Hitsujigaoka, 43°00’N, 141°24’E, Malaise trap, coll. K. Konishi: 2 ♀ (EUM) 27.IX–4.X.2007, 1 ♀ (EUM) 4–11.X.2007, 4 ♀ (EUM) 11–18.X.2007, 7 ♀ (EUM) 25.X– 1.XI.2007, 4 ♀ (2 ♀ in EUM, 2 ♀ in ZISP) 1–8.XI.2007, 1 ♀ (EUM) 8–22.XI.2007, 4 ♀ (EUM) 1–8.IX.2008, 3 ♀ (EUM) 25.IX–2.X.2009, 2 ♀ (EUM) 23.X–6.XI.2009, 3 ♀ (EUM) 5–12.X.2010, 1 ♀ (EUM) 12–19.X.2010, 1 ♀ (EUM) 19–26.X.2010, 1 ♀ (EUM) 26.X–2.XI.2010, 1 ♀ (EUM) 24–31.X.2011, 1 ♀ (EUM) 7–21.XI.2011, 2 ♀ (EUM) 22–29.X.2013. 1 ♀ (EUM) same locality, 16.X.2015, coll. Yu Hisasue. 1 ♀ (EUM) Sapporo, Hitsujigaoka, 43°00’01”N, 141°24’57”E, around nest of Lasius (D.) nipponensis, 17.X.2015, coll. K. Konishi. 1 ♀ (EUM) Chitose, Bifue [Campground], Kusabue-rindô, 42.7154°N, 141.2143°E, Malaise trap, 27.X–10.XI.2012, coll. N. Kuhara. 2 ♀ (EUM) Kyowa, Shinsen-numa, 42°54’N, 140°35’E, 11.IX.2010, coll. K. Konishi. 1 ♀ (EUM) Naganuma, Malaise trap, 26–30.IX.2003, coll. A. Iwasaki. Honshu I.: 11 ♀, 6 ♂ (10 ♀, 5 ♂ in EUM; 1 ♀, 1 ♂ in ZISP) Tochigi Pref., Nikkô-shi, Yumoto, 22.IX.2015, coll. Juriya Okayasu. Shikoku I.: 2 ♀, 1 ♂ (EUM) Ehime Pref., Matsuyama-shi, Mt. Ishizuchi, 1400–1600 m, 10–11.IX.2017, coll. Yu Hisasue. 2 ♀ (EUM) Ehime Pref., Mt. Saragamine, 9.X.1979, coll. Y. Seiyama. 2 ♀ (EUM) Ehime Pref., Odamiyama, Koyayama, 28.X and 19.XI.2000, coll. E. Yamamoto. 1 ♀ (EUM) Ehime Pref., Odamiyama, Hontani, 21–31.X.2008, coll. E. Yamamoto. 1 ♀ (EUM) Tokushima, Sanagouchi, Ôkawara, 33°57’28”N, 134°25’10”E, Malaise trap, 12–17. VI.2016, coll. K. Ôhara. 1 ♀ (EUM) Kôchi Pref., Agawagun, Ino-cho, Teragawa, 33°47’N, 133°12’E, 5.XI.2016, coll. Keita Kuroda. Diagnosis. Antennal flagellum filiform, slender, brownish black or black (Fig. 51). Malar space short, about half as long as basal mandibular width (Fig. 52). Head and mesosoma evenly granulate, dull, impunctate (Fig. 52). Mesopleuron with very short and thin foveate groove (Fig. 52). Propodeum usually with narrow basal area which is often indistinct because of longitudinal wrinkles (Fig. 53). Metacarpus almost reaching tip of the fore wing (Fig. 50). First metasomal tergite very slender, laterally smooth (Fig. 52). Second tergite about as long as anteriorly broad. Metasoma dark brown (Fig. 50). Ovipositor short, robust, with weak dorsal subapical depression and more or less distinct rounded teeth before and behind this depression, with fine teeth ventrally (Fig. 54). Distribution. Russian Far East; in Japan known from Hokkaido, Honshu and Shikoku islands. Biology. One female from Sapporo was collected around nest of Lasius (Dendrolasius) nipponensis Forel (Hymenoptera: Formicidae).

Published as part of Khalaim, Andrey I., 2022, Tersilochinae (Hymenoptera: Ichneumonidae) of Japan: two new species, a new combination and 23 new country records, pp. 301-330 in Zootaxa 5174 (4) on pages 318-321, DOI: 10.11646/zootaxa.5174.4.1, http://zenodo.org/record/6986348