Eupithecia sinuosaria Eversmann, 1848

Larentia sinuosaria Eversmann, 1848, Bulletin de la Société Impériale des naturalistes de Moscou 21 (3): 230. Lectotype ♂ (ZISP, examined), [Russia]: Irkuzk [= Irkutsk].

Eupithecia obliquaria Leech, 1897, Annals and Magazine of Natural History (6) 20: 70. Syntypes 2♂ (BMNH, examined), China (western): Tachien-lu [Kangding] (treated as form of E. sinuosaria in Prout, 1915).

Eupithecia sinuosaria tenella Vojnits, 1976, Acta zoologica Academiae Scientiarum Hungaricae 22 (3–4): 417, fig. 2b. Holotype ♀ (ZFMK, examined), [China]: Prov. Shansi [Shanxi], Mien–shan, 2000 m.

A very common species in Mongolia and adjacent areas. It is distributed from Central Europe in the west to the Chinese provinces of Sichuan and Shanxi, and to Korea in the east. Mongolia (aimags): Govi-Altai, Khovd, Tuv, Zavkhan.