(Figs 4H, 7B, 12H)
Material examined. Russia: PK, Gornotaezhnoe, forest around MTS, 43.68N, 132.17E, 224 m alt., Salix sp., 23.VII.2016, 1 larva, NK594, MK 403714, deposited in INRA; same location, host and date, 1 male (reared from leaf mine), 49.1 / [12Pp-2016-male] (Figs 4H, 7B), deposited in SIF; AO, Skovorodino, near the train station, tree line along the road, 53.98N, 123.93E, 431 m alt., Populus balsamifera, 26. VI.2016, 1 larva, NK563, MK 403688, same location and date, 1 larva, NK562, MK 403681, deposited in INRA.
Leaf mine. The mine is an oval white blotch with 1–2 light folds on the epidermis covering the mine, with distinct epidermal tunnel; situated on the lower side of the leaf along, on narrow leaves of Salix along the main vein (Fig. 12H). Loose grains of frass are accumulated in the corner of the mine (Fig. 12H). Pupation in the mine, in the central part (Fig. 12H).
Trophic specialization. Oligophagous on Salicaceae: Populus, Salix, Chosenia (De Prins & De Prins 2018).
Distribution. Russia: RFE—AO, KK, PK, SO (Sakhalin Island) (Baryshnikova & Dubatolov 2007; Baryshnikova 2016), Siberia (Baryshnikova 2008), European part (Baryshnikova 2008); Japan (Kumata 1963), Korea (Park 1983), Central Asia (Noreika 1991), Europe (De Prins & De Prins 2018).