Opeatocerata bare, Câmara, J. T. & Rafael, J. A., 2014

Câmara, J. T. & Rafael, J. A., 2014, Revision of Opeatocerata Melander, 1928 (Diptera: Empididae: Empidinae), Zootaxa 3846 (4), pp. 502-546 : 510

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 ).

Figures

FIGURE 211. Geographic distribution of species of Opeatocerata.

FIGURES 26 – 32. Opeatoceratas bare sp. nov., holotype ♂. 26, habitus, lateral view; 27, wing. 28 - terminalia, lateral view; 29. lobes of cerci, dorsal view; 30 descendant plate of anterior cercus, posterior view; 31, subepandrial sclerite and bacilliform sclerite, dorsal view; 32, ejaculatory apodeme, phallus and hypandrium, lateral view.

FIGURES 203 – 210. Opeatocerata zuleideae sp. nov., holotype ♂. 203. habitus, lateral view; 204. wing; 205. terminalia, lateral view; 206. lobes of cerci, dorsal view; 207. descendant plate of anterior cercus and hypoproct, posterior view; 208. subepandrial sclerite and bacilliform sclerite, dorsal view; 209. ejaculatory apodeme, phallus and hypandrium, lateral view; 210. hypandrium, ventral view.

FIGURES 100 – 108. Opeatocerata lopesi Smith, 1989, holotype ♂. 100. habitus, lateral view; 101. wing; 102. abdomen and terminalia, lateral view; 103. terminalia, lateral view; 104. lobes of cerci, dorsal view; 105. descendant plate of anterior cercus, posterior view; 106. subepandrial sclerite and bacilliform sclerite, dorsal view; 107. ejaculatory apodeme, phallus and hypandrium, lateral view; 108. phallus, hypandrium, ventral view.