Eupithecia fennoscandica Knaben, 1949, Entomologisk Tidskrift 70 (1–2): 78, pl. 1, figs 1–4, 8; figs 1: A–D; 2: A–D, F. Holotype ♀ (not traced), [Finland]: [Lapland], Saana [= Kilpisjarvi, Saanatunturi].
Misidentifications: Eupithecia undata: sensu Grönblom, 1936; Vojnits, 1975, 1977 (nec Freyer, 1842); Eupithecia pygmaeata: sensu Vojnits, 1977 (nec Hübner, [1799]).
Unavailable name (incorrect subsequent spelling): fennoscandia: Weigt (1990).
This species was recorded for Southern Siberia (Altai and Sajan Mts.) and Mongolia by Dietze (1913, incl. Taf. 85, figs 903, 904) and Vojnits (1975, 1977) as E. undata Freyer and E. pygmaeata Hübner. Subsequently, it was recorded as E. fennoscandica in Viidalepp & Soljanikov (1977), Vojnits (1981) and Mironov (1989 a). Viidalepp (1974) rightly mentioned that the male genitalia of all species of this group, such as E. undata Freyer, E. fennoscandica Knaben, E. leptogrammata Staudinger (= E. melanochroa Wehrli), and E. lafontaineata, the sole north American representative of the group, are very similar to each other and only the female genitalia have very good characteristic features. Mongolia (aimags): Arkhangai, Bulgan, Govi-Altai, Khovd, Khuvsgul, Tuv, Umnugovi, Zavkhan.