Abstract
Two new species of Pteromalus Swederus (Hymenoptera, Pteromalidae, Pteromalinae), Pteromalussteppensis Li & Hu, sp. nov. and Pteromalusxiaomoheensis Yan & Li, sp. nov., are described and illustrated for the first time. Pteromalussteppensis Li & Hu, sp. nov. was reared as a primary, solitary ectoparasitoid of the larval and pupal stages of Orchestessteppensis Korotyaev, 2016 (Coleoptera, Curculionidae). Figures of its development and its host damage are also provided.