Russian wheat aphid (RWA), Diuraphis noxia (Mordvilko, is a serious pest of wheat and barley in several parts of the world: North America, North Africa, Ethiopia and South Africa. Very few sources of resistance have been previously identified in durum wheat. For the past four years, thousands of durum wheat lines and wild species were screened for resistance to RWA, both in the field and in the greenhouse under artificial infestation at Tel Hadya, Syria. Eight lines of durum wheat and 19 accessions of wild species were resistant to RWA (score less than 3 in Du Toit scale from 1-6). These sources of resistance are being used in the durum wheat breeding program to develop resistant varieties to RWA.