Eupithecia dayensis
{{short description|Species of moth}}
{{Speciesbox
| image =
| image_caption =
| genus = Eupithecia
| species = dayensis
| authority = Herbulot, 1983{{cite web |last=Yu |first=Dicky Sick Ki |url=http://www.taxapad.com/local.php?taxonidLC=82872783 |title=Eupithecia dayensis Herbulot 1983 |website=Home of Ichneumonoidea |publisher=Taxapad |archive-url=https://web.archive.org/web/20160325031823/http://www.taxapad.com/local.php?taxonidLC=82872783 |archive-date=March 25, 2016}}
| synonyms =
}}
Eupithecia dayensis is a moth in the family Geometridae. It is found in Djibouti.[http://www.afromoths.net/species_by_code/EUPIDAYE Afro Moths]