Two new species of Dolichurus Latreille (Hymenoptera, Ampulicidae) from China, with a key to species of the genus

Two new species of <i>Dolichurus</i> Latreille, 1809, namely <i>D. albipedigerus</i> Bai & Li, <b>sp. nov.</b> and <i>D. nigrilamellatus</i> Bai & Li, <b>sp. nov.</b> are described from China (Yunnan, Guangdong and Jiangxi Provinces). <i>Dolichurus albipedigerus</i> Bai & Li, <b>sp. nov.</b> is similar to <i>D. apiciornatus</i> Tsuneki, 1977, but differs in having the mandible ivory white medially, the clypeus with a weak median carina, and the body with ivory-white spots. <i>Dolichurus nigrilamellatus</i> Bai & Li, <b>sp. nov.</b> is similar to <i>D. aposanus</i>Tsuneki et al., 1992, but differs in having the frons with dense rugae converging toward the midline above the lamella, the sternaulus conspicuous, and the posterior margin of T1-T3 without tiny puncture-rows medially. Additionally, a key to the Chinese species of <i>Dolichurus</i> is provided.