Xestia efflorescens (Butler, 1879)

Fig. 3: 22

Material. Russia: Kunashir Island, 4.5 km NW Mendeleyevo Airport, Tretyakovo village, 1.09– 12.09.2019, 14 ex., leg. S. Rybalkin.

Distribution. Russia (Sakhalin, Khabarovsky Krai, Primorsky Krai), Japan (Hokkaido, Honshu, Shikoku, Kyushu), Korea, China, Taiwan (Lelej 2016). The species is recorded for the first time from the Kuril Islands.