Eupithecia tenoensis is a moth in the Geometridae family. It is found in the Region of Maule (Curico Province) in Chile. The habitat consists of either the Central Valley or the Northern Valdivian Forest biotic provinces. The length of the forewings is about 8 mm for males. The forewings are pale brownish grey. The hindwings are paler than forewings, with some dark scaling along the anal margin. Adults have been recorded on wing in November.