A remarkable new species of Rhaphium Meigen (Diptera, Dolichopodidae) from Sri Lanka Author Naglis, Stefan Author Grootaert, Patrick text Zootaxa 2011 2991 44 48 journal article 10.5281/zenodo.200752 df1170a6-b7a6-48ed-9475-470898fa5321 1175-5326 200752 Key to Oriental genera of Rhaphiinae 1. Antennal scape bare dorsally; fronto-clypeal suture obscured; seta present between postverticals and postoculars; posterior mesonotum not flattened; vein M2 absent; crossvein dm-cu shorter than distal section of CuA; anal cell present; mid femur usually with anterior and posterior preapical seta; male hypopygium at least partially exposed or pedunculate; male sternite 8 without strong setae; hypandrium strongly reduced........................................................... 2 - Without the above combination of characters.................................................... non Rhaphiinae 2. Veins R4+5 and M strongly converging before wing tip; first flagellomere at least 5 times as long as high in males and females......................................................................... Ngirhaphium Evenhuis & Grootaert - Veins R4+5 and M subparallel; first flagellomere various...................................................... 3 3. Arista apical, subapical or absent........................................................... Rhaphium Meigen - Arista distinctly dorsal................................................................................ 4 4. Body light metallic green; lower postocular setae multiseriate; male cercus ribbon-like............. Nematoproctus Loew - Body dark metallic brown or black; lower postocular setae uniseriate; male cercus various............................ 5 5. Acrostichal setae biseriate; 5 dorsocentral setae present; abdominal segment 7 in males forming long peduncle.................................................................................................. Urodolichus Lamb - Acrostichal setae absent; 4 dorsocentral setae present; abdominal segment 7 in males as short peduncle.................................................................................... Haplopharyngomyia Meuffels & Grootaert