Three new species of Rhaphium from China, with an updated key to Chinese Rhaphium (Diptera, Dolichopodidae, Rhaphiinae) Author Qilemoge, Author Wang, Mengqing Author Yang, Ding text ZooKeys 2019 840 87 99 http://dx.doi.org/10.3897/zookeys.840.31602 journal article http://dx.doi.org/10.3897/zookeys.840.31602 1313-2970-840-87 256DCD22DA924AAAB0CF6129E0CFA15F Rhaphium Meigen, 1803 Rhaphium Meigen 1803: 272. Type species: Rhaphium macrocerum Meigen, 1824. Diagnosis. Body small to large (1.5-5.7 mm); vertex flat; oc nearly as long as vt; face obviously narrower than frons; clypeus not obviously separate from face; antenna black, first flagellomere mostly prolonged, 2-10 times longer than wide, arista apical; propleuron with dense pale white hairs, without distinct bristle; hind coxa with or without 1 outer bristle at middle; vein M straight and not bifurcated, R4+5 parallel or slightly convergent with M in wing apex, CuAx ratio less than 1; abdominal segments 1-3 usually with long pale hairs, abdominal segment 6 visible and pubescent; male genitalia connected tightly with pregenital segment, cap-like, cercus varied, often long and narrowed towards tip, sometimes bifurcate, with hairs and bristles at middle ( Yang et al. 2011 ).