Opeatocerata smithi, 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 : 533-535

Opeatocerata smithi sp. nov.

( Figs 152–160 )

Diagnosis. Anterior cercus with a proclinate dorsal projection in lateral view ( Figs 154, 155 ), anterior margin rounded in dorsal view ( Fig. 156 ); epandrium lobe truncate at apex ( Fig. 155 ); phallus subcylindrical, wider medially, with dorsal subapical narrow appendix ( Fig. 159 ).

Description. Male ( Fig. 152 ). Head: Face slightly divergent toward the proboscis, dark brown, with gray pruinescence visible in ventral view, about 4 X longer than lower width. Ocellar tubercle protuberant, brown with gray pruinescence; ocelli light brown. Antenna light brown with black bristles; postpedicel about 1.5 X longer than pedicel; stylus about 2.5 X longer than postpedicel. Proboscis yellow shorter than head height. Thorax yellow, shiny ( Fig. 152 ). Legs yellow, except for hind femur and tibia with brown apical ring and all tarsomeres 4–5 black; hind tibia with anterodorsal, posterodorsal and posteroventral rows of longer bristles; hind tarsus with anterodorsal and posterodorsal rows of longer bristles. Wing ( Fig. 153 ) hyaline, pterostigma, brown, conspicuous, about 2.4 X longer than wide. Halter light yellow. Abdomen yellow, shiny ( Fig. 152 ); tergite 8 divided in two subtriangular plates; sternite 8 divided in two trapezoidal plates. Terminalia: Anterior cercus with a proclinate dorsal projection in lateral view ( Figs 154, 155 ), anterior margin rounded in dorsal view ( Fig. 156 ); descendant plate subrectangular with lower margin slightly bilobate in posterior view ( Fig. 157 ). Posterior cercus with acuminate apex in lateral view ( Figs 154, 155 ); without dorsal projections ( Fig. 156 ). Hypoproct subtriangular in lateral lateral view ( Fig. 155 ) and comma-shaped in posterior view ( Fig. 157 ). Epandrial ventral lobe truncate at apex, spiniform bristles mesially and longer bristles apically ( Fig. 155 ). Hypandrium longer than wide, with rounded apex and median sinus ( Fig. 160 ), without long bristles. Phallus subcylindrical, wider medially, longer than hypandrium, with dorsal subapical narrow appendix ( Fig. 159 ). Subepandrial sclerite wider than long, U-shaped ( Fig. 158 ). Bacilliform sclerite folded and longer than subepandrial sclerite ( Fig. 158 ). Specimen length: 2.9 m; wing length: 3.5 mm. Female. Unknown.

Geographical distribution. Brazil (Amazonas) ( Fig. 211 ).

Type material. HOLOTYPE ♂, labelled: Brasil, AM[azonas], Maués, Rio Abacaxis, Campina Pacamiri, 04º 35 ’ 49 ’’S / 58 º 13 ’ 14 ’’W, 30–31.v. 2008. Malaise na mata. J. A. Rafael e equipe ( INPA).

Holotype condition. Postallar, scutellars and acrostichals bristles lost; left wing mounted on microslide; abdomen in microtube with glycerin.

Etymology. The specific name is in tribute to K.G.V. Smith due to his contribution to the knowledge on the Neotropical fauna of Empididae , particularly the Brazilian fauna.

Remarks. Opeatocerata smithi sp. nov. has an anterior cercus with proclinate dorsal projection ( Fig. 155 ), descendant plate subrectangular in posterior view ( Fig. 157 ), subepandrial sclerite U-shaped ( Fig. 158 ) and phallus with dorsal subapical narrow appendix ( Fig. 159 ), all characters similar to O. spinipenis sp. nov.. Differs from the latter by the hypoproct subtriangular in lateral view ( Fig. 155 ), epandrial lobe with truncate apex ( Fig. 155 ) and phallus without lateral spines ( Fig. 160 ). Opeatocerata spinipenis sp. nov. has hypoproct bacilliform in lateral lateral view ( Fig. 163 ), epandrial lobe with rounded apex ( Fig. 163 ) and phallus with lateral subapical spines ( Fig. 168 ).

Figures

FIGURE 211. Geographic distribution of species of Opeatocerata.

FIGURES 152 – 160. Opeatocerata smithi sp. nov., holotype ♂. 152. habitus, lateral view; 153. wing; 154. abdomen from tergite 6 to terminalia, lateral view; 155. terminalia, lateral view; 156. lobes of cerci, dorsal view; 157. descendant plate of anterior cercus and hypoproct, posterior view; 158. subepandrial sclerite and bacilliform sclerite, dorsal view; 159. ejaculatory apodeme, phallus and hypandrium, lateral view; 160. hypandrium, ventral view.

FIGURES 161 – 169. Opeatocerata spinipenis sp. nov., holotype ♂. 161. habitus, lateral view; 162. wing; 163. terminalia, lateral view; 164. lobes of cerci, dorsal view; 165. descendant plate of anterior cercus and hypoproct, posterior view; 166. subepandrial sclerite and bacilliform sclerite, dorsal view; 167. ejaculatory apodeme, phallus and hypandrium, lateral view; 168. phallus and hypandrium, ventral view; 169. hypandrium, ventral view.