An illustrated key to the species of Latreille (Hymenoptera, Gasteruptiidae) from Palaearctic China, with description of four new species.

Four new species of the genus Latreille, 1797 (Hymenoptera: Evanioidea: Gasteruptiidae: Gasteruptiinae) are described from China. Three are from Shaanxi (NW China; Tan & van Achterberg, , Tan & van Achterberg, , and Tan & van Achterberg, ) and one from S China and Ningxia ( Tan & van Achterberg, ). Eleven species are newly recorded for Shaanxi ( Kieffer, 1912, Pasteels, 1958, Pasteels, 1958, Enderlein, 1913, Zhao, van Achterberg & Xu, 2012, (Tournier, 1877), (Thomson, 1883), Enderlein, 1913, Kieffer, 1911, (Thomson, 1883) and Kieffer, 1911). The newly-recorded species and the new species are keyed and illustrated. Two new synonyms are proposed: Enderlein, 1913, with Cameron, 1888, and Kieffer, 1911, with (Tournier, 1877),