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 Opeatocerata bare sp. nov. ( Figs 26–32 ) Diagnosis . Yellow species; descendant plate of the anterior cercus with lateroventral projection in posterior view ( Fig. 30 ); phallus with narrow base, wider towards the apex with large dorsal subapical appendix ( Fig. 32 ). Description . Male ( Fig. 26 ). Head : Face slightly divergent toward the proboscis, dark brown, with gray pruinescence visible in ventral view, about 3X longer than lower width. Ocellar tubercle protrubeant, dark brown with brown pruinescence; ocelli brown. Antenna brown to black bristles; postpedicel about 2X longer than pedicel; stylus about 2X longer than postpedicel. Proboscis yellow shorter than head height. Thorax yellow, shiny ( Fig. 26 ). Legs yellow, except by hind femur and tibia with apical black ring and all tarsomeres 4–5 black; hind tibia with anterodorsal and posterodorsal and anteroventral rows of longer bristles; hind tarsus with anterodorsal and posterodorsal rows of longer bristles. Wing ( Fig. 27 ) hyaline; pterostigma brown, conspicuous, about 2.8X longer than wide. Halter yellow. Abdomen yellow, shiny ( Fig. 26 ); tergite 8 divided in two subrectangular plates; sternite 8 divided in two trapezoidal plates. Terminalia : Anterior cercus with reclinate dorsal projection in lateral view ( Fig. 28 ), subrectangular in dorsal view ( Fig. 29 ); descendant plate with lateroventral projection in posterior view ( Fig. 30 ). Posterior cercus with rounded apex in lateral view ( Fig. 28 ) and pointed dorsal subbasal projection ( Fig. 29 ). Hypoproct subtriangular in lateral view ( Fig. 28 ) and comma-shaped in posterior view. Epandrial ventral lobe with apex slightly bilobed ( Fig. 28 ); spiniform bristles mesially on dorsal lobe and longer bristles apically on ventral lobe ( Fig. 28 ). Hypandrium longer than wide, with rounded apex, without long bristles. Phallus with narrow base, wider at mostly, longer than hypandrium, with large dorsal subapical appendix ( Fig. 32 ). Subepandrial sclerite wider than long, U-shaped ( Fig. 31 ). Bacilliform sclerite folded and longer than subepandrial sclerite ( Fig. 31 ). Specimen length : 3.0 mm; wing length : 3.6 mm . Female . Unknown. Geographical distribution . Brazil (Amazonas) ( Fig. 211 ). Type material. HOLOTYPE ♂, labelled: Brasil , Amazonas, Manaus, Rod[ovia] AM 0 10 Km 50. ZF-2, Km 14, Torre, 02º35’21’’S ; 60º06’55’’W / 4.iii.2011 . 03–06:00h. Arm[adilha] luz dossel, 40 m de altura. F.F Xavier Filho, J.T.Câmara, P.Dias ( INPA ). Paratypes : Brazil , Amazonas . idem , Km 27, entrada LBA 02º35’S ; 60º06’W ; 5.iii.2011 . 18–21:00h. Arm[adilha] luz dossel 35 m . F.F. Xavier Filho, R.F.Freitas ( 1 ♂ , INPA ). Manaus, PDBFF / WWF. Proj[eto] Bert Klein / x.1985 , Malaise / Reserva 1210 ( 1 ♂ , INPA ). Holotype condition . Tarsomeres 2–5 of left hindleg lost; wing on microslide; abdomen in microtube with glycerin. Etymology . The specific epithet is a noun in apposition and refers to the indigenous tribe called “ Baré ”, that lives in the northwest portion of the state of Amazonas. Remarks. Opeatocerata bare sp. nov. is similar to O. zuleideae sp. nov . by the following shared characters: phallus with large dorsal subapical appendix ( Figs 32 , 209 ), anterior cercus with reclinate dorsal projection in lateral view ( Figs 28 , 205 ) and posterior cercus with pointed dorsal subbasal projection in dorsal view ( Figs 29 , 206 ). Differs from the latter by the tergites without spots ( Fig. 26 ) and posterior cercus with rounded apex and without median subtriangular projection in lateral view ( Fig. 28 ). Opeatocerata zuleideae sp. nov. has tergites with paramedian subrectangular black spots ( Fig. 203 ) and posterior cercus with rounded apex and with median subtriangular projection in lateral view ( Fig. 105 ).