This species occurs in north-east Africa. It is principally found in Ethiopia, although its range extends from the Red Sea Hills and Suakin (Sudan) through Eritrea and Djibouti (especially in the Goda Mountains) to northern Somalia. It is also found in the Red Sea Hills in the south-west Arabian Peninsula opposite the Horn of Africa. Historically, its range extended into Egypt, but not into recent times (i.e., post 1500AD; see Osborn and Osbornová 1998).