Lewis & Short

Dardăni, ōrum, m., Δάρδανοι, a people in Upper Moesia, the modern Servia, Plin. 3, 26, 29, § 149; Caes. B. C. 3, 4; Cic. Sest. 43, 94; Liv. 43, 20; Eutrop. 5, 7; Just. 8, 6, 3 al.
Hence, Dardănĭa, ae, f., their country, Varr. R. R. 2, 1, 5.