Eupithecia rosalia is a moth in the family Geometridae. It is found in the regions of Araucania (Malleco Province) and Los Lagos (Valdivia and Osorno provinces) in Chile.[1] The habitat consists of the Northern Valdivian Forest and Valdivian Forest biotic provinces.
The length of the forewings is about 8.5–10 mm for males and 9 mm for females. Adults have been recorded on wing from November to February.