Melanargia sadjadii n. sp., from north Iran (Lepidoptera, Nymphalidae). In North Iran, in the vicinity of Caspian Sea (Northen Nekà, Mazandaràn Province), a new Melanargia was discovered. Its aspect is very similar to M titea wiskotti (Rôber, 1896) from Southern Turkey, characterized by a large size and the reduction of the black maricings, however its well differentiated genitalia are closer to M. evartianae Wagener, 1976. In the other hand this entity is also clearly and constantly distinguishable from evartianae, so consequently we think it is a new species : M. sadjadii n. sp.