Revision of Opeatocerata Melander, 1928 (Diptera: Empididae: Empidinae) Author Câmara, J. T. Author Rafael, J. A. text Zootaxa 2014 3846 4 502 546 journal article 10.11646/zootaxa.3846.4.2 ea136b1c-dc96-4c41-b078-01ca553453a0 1175-5326 252519 71A80CC3-CDC1-4291-863B-FA7501D60AF5 Key to species of Opeatocerata (females) (the following species are known only from male specimens: O. agudeloi , O. ampullaria , O. bare , O. chaetohypandrialis , O. cylindrophallus , O. hadrophallus , O. megalophallus , O. mourai , O. nhamunda , O. smithi , O. spinipennis , O. tanimboca and O. zuleideae ) 1 Tergites with spots ( Figs 58 , 74 , 179 ).................................................................... 2 - Tergites without spots ( Figs 42 , 109 , 145 )................................................................. 6 2 Tergites with spots on lateral margins ( Câmara & Rafael, 2011, figs 17, 18 ).............. O. melanderi Câmara & Rafael - Tergites with paramedian spots ( Figs 58 , 179 ).............................................................. 3 3 Tergites with paramedian subtriangular spots in dorsal view ( Fig. 60 )............................... O. cooperi Smith - Tergites with paramedian subretangular spots in dorsal view ( Figs 77 , 179 )...................................... 4 4 Tergite 10 divided into two subtriangular plates ( Fig. 201 )............................. O. trilobata Câmara & Rafael - Tergite 10 undivided ( Figs 78 , 182 )...................................................................... 5 5 Sternite 8 uniformly broad ( Fig. 78 ). Genital fork narrow at base ( Fig. 79 )....................... O. curvipenis sp. nov. - Sternite 8 narrow in apical half ( Fig. 182 ). Genital fork wide at base ( Fig. 183 )....................... O. stubbsi Smith 6 Fore tarsomere 1–5 black ( Fig. 47 ). Sternite 8 with acute apex ( Fig. 150 )............... O. rubida (Wheeler & Melander) - Fore tarsomere 4–5 black ( Figs 42 ). Sternite 8 with rounded apex ( Figs 44 , 111 ).................................. 7 7 Genital fork with arms fused at apex ( Fig. 112 ).................................................. O. lopesi Smith - Genital fork with arms not fused at apex ( Figs 44, 46 )....................................... O. brasiliensis sp. nov.