Rhaphium Meigen, 1803

Qilemoge,, Wang, Mengqing & Yang, Ding, 2019, Three new species of Rhaphium from China, with an updated key to Chinese Rhaphium (Diptera, Dolichopodidae, Rhaphiinae), ZooKeys 840, pp. 87-99 : 87

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).