This is Chiasmia subcurvaria [Triple Striped Peacock]. Common in the western half of Africa including Ethiopia. The shape and curvature of the three black lines on the wing are the most important feature. A similar species is Icturgia disputaria but the darker background colour and shape of the black lines discount this species. This species was next to the outside light of my chalet at Sidamo Lodge, Lake Langano at 1605mts above se-level.