Caryocolum oculatella (Thomann, 1930)

Records. BIDZILYA (2002), HUEMER et al. (2017).

Material examined. RUSSIA: ALTAI REPUBLIC: Ongudai distr., 15 km lower of Iodro vill., along Tchuja river, 6.viii.2000, 1, O. Bidzilya leg.; Ongudai distr., Maliy Jaloman, 700 m a.s.l., 2.viii.2001, 9 1 ♀, at light, O. Bidzilya leg. (all ZMKU); 1 ♀, Kuraisky khrebet, 50°16‒20′N 87°50‒55′E, 2300 m a.s.l., 11. and 13.vii.2001, 1 (gen. slide 224/19, O. Bidzilya), K. Nupponen leg. (NUPP); Kosh-Agach district, 10 km NE of Kosh-Agach,Kurai Mountains Range,Tabozhok valley, 2.100 m a.s.l., 50°4′32.36″N, 88°43′41.83″E, 2.–4.viii.2016, 9 1 ♀, (Barcode TLMF Lep 20381, TLMF Lep 20382, TLMF Lep 20383), P.Huemer & B. Wiesmair leg. (TLMF); Belyashi (Dzhazator) env. (25 km NW), confluence of Argut and Karagem rivers, 49°51′56″N, 87°10′22″E, rocky steppe, 1400 m, 27.–28.vii.2017, 48 9 ♀♀, J. Šumpich leg. (NMPC); Kosh- Agach Distr., Kurai env. (15 km SW), Dzhangyskol lake, 50°10′49″N; 87°44′19″E, coniferous forest/steppe, 1830 m, 24.–25.vi.2015, 1, J. Šumpich leg. (NMPC); Kosh-Agach Distr., Chagan-Uzun env., Krasnaya Gorka hill, 50°05′00″N; 88°25′15″E, rocky steppe, 1870 m, 29.vi.2015, 1, J. Šumpich leg. (NMPC); Kosh-Agach Distr., Kurai env. (6.5 km SW), 50°10′35″N, 87°53′55″E, grassy steppe, 1550 m, 9.‒10.vii.2014, 1 ♀, 30.vii.2017, 2, J. Šumpich leg. (NMPC); Aktash vill., 17.‒22. vii.2009, 10, (gen. slide GEL 1225, GEL 1243, P. Huemer) (Barcode TLMF Lep 19842, TLMF Lep 19843), B. Schacht leg.(TLMF); Aktash vill., 50°19′12″N; 87°36′00″E, grassy steppe, rocks, 1400 m, 11.vii.2014, 4, J. Šumpich leg. (NMPC); 45 km N of Ulagan vill., Chulyshman valley, 51°01′03″N; 88°00′39″E, grassy steppe, rocks, 600 m, 27.–28.vi.2015, 4 ♀♀, J. Šumpich leg. (NMPC).

Molecular data. BIN BOLD: ABV4976 (n = 4, 1 public, 3 from the Altai). The average intraspecific divergence of the barcode region is 0.1% (maximum 0.15%). The nearest neighbour is C. alsinella (Zeller, 1868) with 3.53% p-distance.

Distribution. The Alps (Switzerland, Austria), Mongolia (POVOLNÝ 1973, as Caryocolum pr. amaurellum; HUEMER 1988; HUEMER & KARSHOLT 2010), Russia: the Altai Republic, South of Krasnoyarskiy krai, Zabaikalskiy krai (BIDZILYA et al. 1998, BIDZILYA 2002).

Remark. Caryocolum oculatella was described from the vicinity of Martina in Graubünden in Switzerland where it rarely occurs (LEPIFORUM 2019) whereas in the Altai mountains it belongs to the abundant species.