3. Leucobrephos middendorfii (Ménétriés, 1858)

(adults Fig. 15C; male gen. Figs. 32E, 32F; female gen. Fig. 32G)

Biston middendorfii: Erschov & Field, 1870: 166 .

Brephos middendorfii: Staudinger & Wocke, 1871: 143; Staudinger & Rebel, 1901: 260.

Leucobrephos middendorfii nivea W. Kozhantschikov, 1924: Viidalepp, 1976: 843; 1996: 11; Beljaev & Mironov, 2019: 235. Leucobrephos middendorfii: Berlov & Berlov, 2008: 50; Mironov et al., 2008: 190.

Material examined. Irkutskaya Oblast: “ Lower Tunguska river, the road to Korelinskaya vill.”, 15.IV.?, 1 ♁, (unknown collector) [ZIN]. Altay Republic: Ongudaysky Distr., 25 km NW of Tuekta vill., Seminsky Pass (51°10’26.48”N, 85°37’24.57”E, h= 1620 m), 1 ♁, S.A. Knyazev [SK] (GenBank ID: OK073156). Republic of Sakha (Yakutia): “Jablonevoj (Gebge). Jukutsk-Geb.”, 23.IV.1915, 3 ♁; same loc., 24.IV.1915, 1 ♁, 1 ♀, W. Kozhantshikov; “Yakut expedition of Academy of Sciences, Aldan river, near the estuary of Tymiton river”, 11. V .1926, 1 ♁, Zaykov [ZIN]. Khabarovsky Kray: “near riv. Chelasin, 25–30 versts [unlegible] Stanovoy Range, Ayan–Nel’kan expedition, end of April–beginning of May 1903 ”, 1 ♁; “56 versts, 20.IV.10” [flew over the snow], 1 ♁; “68 versts, [unlegible], 21.IV.10”, 2 ♁; “57 versts, 21.IV.10”, 2 ♁, Popov [ZIN]. Amurskaya Oblast: “Zeya river”, no date, 2 ♁, unknown collector; “ Amur expedition of Gondatti, detachment of Prokhorov, placer on the left shore of riv.?Unaka [=Unakha]”, 29.IV.1911, 1 ♁, Nikiforov [ZIN] .

Distribution. Uralian–Far Eastern, boreal. From Polar Urals to Kamchatka and Primorye. Outside Russia: Mongolia.

Hostplants: unknown. Caterpillars of the nearest species L. brephoides (Walker, 1857) feed on Betula, Alnus, Populus and Salix (Beljaev 2016) .

Genetic note. There were not available material for DNA barcoding from the Baikal region, however, I have obtained the sequence from Altaian specimen (see “Material examined”). It differs from COI of L. brephoides (inhabits the boreal zone of North America) by 3.2–3.4%.

Subfamily GEOMETRINAE

Tribe GEOMETRINI