Eupithecia extensaria Freyer, 1845

Acidalia Geom [etra] extensaria Freyer, 1845, Neuere Beiträge zur Schmetterlingskunde 5 (73): 96, tab. 438, fig. 3. Lectotype ♂ (designated in Mironov & Galsworthy, 2013, coll. K. Dietze in MNHU, examined), [Russia]: Sarepta. Eupithecia sydyi Staudinger, 1885, Stettiner Entomologische Zeitung 46 (7–9): 351. Syntypes 9, at least 4♂, 4♀ (coll. O. Staudinger in MNHU, examined), Central-Asien [China]: Kuldja-District (synonymised in Bohatsch, 1893; as variation of Eupithecia extensaria Freyer, 1845).

Eup[ithecia] extensaria f. leuca Dietze, 1910, Biologie der Eupithecien 1, taf. 74, fig. 467; ibidem (1913), 2: 121. Holotype ♀ (coll. K. Dietze in MNHU, examined), [Russia]: Ussuri, Kasakewitsch.

A widespread Palaearctic species distributed from Spain and eastern England in the west to Japan in the east. First recorded for Mongolia by Viidalepp & Soljanikov (1977). Mongolia (aimags): Khovd, Khuvsgul.