Eupithecia tarapaca is a moth in the family Geometridae first described by Rindge in 1989. It is found in the region of Taracap'a in Arica Province, Chile.[1] The habitat consists of either the NorthernDesert or the Northern Andean Cordillera Biotic Provinces.
The length of the forewings is about 9 mm for males. Adults have been recorded on wing in November.
The specific name is based on the type locality.