Eupithecia horismoides is a moth in the family Geometridae. It is found in the regions of Araucania (Cautin Province)[1] and Los Lagos (the provinces of Osorno, Llanquihue, and Chiloe) in Chile.[2] The habitat consists of the Northern Valdivian Forest and Valdivian Forest Biotic provinces.
The length of the forewings is about 14–16 mm for males and 14.5-16.5 mm for females.