New data on the genus Derops Sharp (Coleoptera, Staphylinidae, Tachyporinae) from China with description of two new species

Two new Chinese species of Derops are described: D. hainanus sp. n. from Hainan and D. yunnanus sp.n. from Yunnan. Females of D. punctipennis Schülke and D. schillhammeri Schülke are described for the first time and new provinces records of D. smetanai Schülke and D. dingshanus Watanabe are reported. The key to Chinese species of Derops published by Schülke 2003 is modified to include the new species.