Dorytomus nordenskioldi Faust 1883

Dorytomus nordenskioldi Faust, 1883 MATERIAL. Russia: Khakasia (first record): 50–60 km SE of Abaza City, West Sayan Mt. Range, southern slope of Kantegirsky Mt. Range, trail along Sambyl River, 1–2.VII 1993, leg. G.E. Davidian, 1 ♀ (ZIN). Tuva (first record): southern slope of Uyuksky Mt. Range, ~ 55 km NW of Kyzyl, sweeping canopy of young aspens, 5.VIII 1980, leg. B.A. Korotyaev, 85 ex., mostly with integument not fully pigmented (ZIN); north-western extremity of the Akademik Obruchev Mt. Range, Khertesh-Taiga Mt. Range, 50 km NNE of Kyzyl, 2200–2400 m, mountain tundra, 19–21. VI 2001, leg. R. and A. Dudko, I. Lyubechanskii, 1 ♀ (SZMN). Buryatia (first record): Kabansky Distr., Khamar-Daban Mt. Range, Vydrinaya River upstream of Rechka Vydrinaya Vill., 51°28ʹ51.97ʺ N; 104°51ʹ05.26ʺ E, flood plain, 31.VII 2018, leg. B.A. Korotyaev, 1 ♀ (ZIN). Zabaikalsky Krai. Krasnochikoysky Distr.: 3.5 km W of Zhindo Vill., Chikoy River left bank, floodplain forest with Populus? suaveolen s, 9–10. VI 2019, leg. B.A. Korotyaev, 1 ♀ (ZIN); Yamarovka Vill., 15. VI 1905, leg. P.S. Mikhno, 2 ♀ (teneral) (ZIN); 30. VI 1905, leg. P.S. Mikhno, 2 ♀ (teneral) (ZIN); Mt. Sherlovaya, 15. VI 1988, leg. O.N. Kabakov, 1 ♂ (ZIN). Khabarovsky Krai: Bolshekhekhtsirsky Nature Reserve, Bychikha Stn., 48°17.5ʹ N; 134°49.7ʹ E, 2005, leg. Yu.M. Marusik, 1 ♂, 1 ♀ (ZIN); Khabarovsk, Khekhtsirsky Mt. Range, 1.X 1956, leg. O.N. Kabakov, 1 ♀ (ZIN); Lower Amur course, Nizhnetambovskoe Vill., 12. VI 1957, leg. O.N. Kabakov, 1 ♀ (ZIN); NE of Lake Chlya, 26. VI 1957, leg. O.N. Kabakov, 1 ♂, 1 ♀ (ZIN). Primorsky Krai: Kaimanovka Vill., 43°38′29″ N; 132°15′19″ E; 43°38′39″ N; 132°15′59″ E, in litter under Populus tremula, 14.X 2023, 2 ex.; 17.X 2023, 9 ex.; 22.X 2023, 1 ex. Gornotayozhnoye Vill., 43°41′37″ N; 132°08′32″ E, in litter under P. tremula, 09.X 2023, 1 ex. In total 13 ex. have been collected in the study area. Kazakhstan. Mts Aktau, 80 km S of Zhana-Arka, 7. VI 1958, leg. M.M. Loginova, 1 ♂; Mts Aktau, 60 km S of Zhana-Arka, 8. VI 1958, leg. V. I. Tobias, 1 ♂, 2 ♀; Taldy-Manak River flood plain, S of Zhana-Arka, 8. VI 1958, leg. V. I. Tobias, 1 ♂. Eastern Kazakhstan, Ulbinsky Mt. Range, N of Zyryanovsk, southern slope of Mt. Schebnyukha, 800 m, 22. VI 2001, leg. V. Yu. Savitskii, 1 ♀. Karkaraly, 22.VII 1897, leg. Kinits, 2 ♀ (ex coll. P.P. Semenov-Tian-Shanskii). Alma-Ata, Nature Reserve, 1550, aspen, 11.VII 1937, leg. E. Samojlovitsh, 1 ♀ (teneral); 1600, 16.VII 1937, leg. A. Agapova, 1 ♀ (all in ZIN). Mongolia. Central Aimak, somon Mungen-Mort, litter in a birch forest, 18.IX 1989, leg. Ye.M. Veselova, 2 ♂, 2 ♀ (ZIN). Ubur-Changai Aimak, 15 km W of Bat-Ulzii, Orkhon River downstream of the waterfall, in litter under aspen, 22.IX 1981, leg. B.A. Korotyaev, 120 ex. (ZIN). HOST PLANTS. The only recorded host throughout the range is Populus tremula, although a single specimen was swept by the first author from P. suaveolens in a floodplain forest on the left bank of the Chikoi River in Zabaikalsky Krai in the absence of the aspen nearby. DISTRIBUTION. Central (reaching Great Britain in the West) and Eastern Europe including Latvia and Lithuania (but absent from Scandinavia, Finland, and Estonia: Alonso-Zarazaga et al., 2023), Northern and Central European Russia south to Gremyachka Village in Ryazan Oblast, West and southern East Siberia (but not known from Altai: Legalov, 2020) including Khakasia (first record) and Tuva (first record); the Russian Far East: Kamchatsky Krai (Milkovo and Kozyrevsk villages in the Central Kamchatka (Korotyaev, 1976b), Amurskaya Oblast, Primorsky Krai (Korotyaev, 1996), Sakhalin (Legalov, 2010); Kazakhstan (Korotyaev, 1976 a, 1996; overlooked in the Palaearctric Catalogue: Alonso-Zarazaga et al., 2023), Mongolia Korotyaev, 1996 (overlooked in the Palaearctric Catalogue).