Opeatocerata nhamunda, 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 : 530

publication ID	https://doi.org/ 10.11646/zootaxa.3846.4.2
publication LSID	lsid:zoobank.org:pub:71A80CC3-CDC1-4291-863B-FA7501D60AF5
DOI	https://doi.org/10.5281/zenodo.5285273
persistent identifier	https://treatment.plazi.org/id/03F6943F-E069-FF81-C7C7-FD3DAC8B17AC
treatment provided by	Plazi
scientific name	Opeatocerata nhamunda
status	sp. nov.

Treatment

Opeatocerata nhamunda View in CoL sp. nov.

( Figs 138–144 View FIGURES 138 – 144 )

Diagnosis. Anterior cercus with a proclinate dorsal projection in lateral view ( Fig. 140 View FIGURES 138 – 144 ) and descendant plate subrectangular in posterior view ( Fig. 142 View FIGURES 138 – 144 ); posterior cercus with rounded apex in lateral view ( Fig. 140 View FIGURES 138 – 144 ); phallus subcylindrical ( Fig. 144 View FIGURES 138 – 144 ).

Description. Male ( Fig. 138 View FIGURES 138 – 144 ). Head: Face parallel-sided, dark brown with gray pruinescence visible in ventral view, about 5X longer than lower width. Ocellar tubercle protuberant, dark brown with gray pruinescence; ocelli brown. Antenna brown with black bristles; postpedicel about 2X longer than pedicel; stylus about 2.5X longer than postpedicel. Proboscis yellow, shorter than head height. Thorax yellow, shiny ( Fig. 138 View FIGURES 138 – 144 ). Legs yellow, except for hind femur and tibia with brown apical 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. 139 View FIGURES 138 – 144 ) hyaline, pterostigma, brown, conspicuous, about 2.4X longer than wide. Halter yellow. Abdomen yellow, shiny ( Fig. 138 View FIGURES 138 – 144 ); tergite 8 divided in two subrectangular plates; sternite 8 divided in two trapezoidal plates. Terminalia: Anterior cercus with a proclinate dorsal projection in lateral view ( Fig. 140 View FIGURES 138 – 144 ), with posterior margin slightly concave in dorsal view ( Fig. 141 View FIGURES 138 – 144 ); descendant plate subrectangular in posterior view ( Fig. 142 View FIGURES 138 – 144 ). Posterior cercus with rounded apex in lateral view ( Fig. 140 View FIGURES 138 – 144 ), with pointed dorsal subbasal process in dorsal view ( Fig. 141 View FIGURES 138 – 144 ). Hypoproct subrounded in lateral view ( Fig. 140 View FIGURES 138 – 144 ) and comma-shaped in posterior view ( Fig. 142 View FIGURES 138 – 144 ). Epandrial ventral lobe slightly bilobate at apex ( Fig. 140 View FIGURES 138 – 144 ), spiniform bristles mesially on dorsal lobe and longer bristles apically on ventral lobe ( Fig. 140 View FIGURES 138 – 144 ). Hypandrium longer than wide, with rounded apex, without long bristles. Phallus subcylindrical, longer than hypandrium ( Fig. 144 View FIGURES 138 – 144 ). Subepandrial sclerite wider than long, U-shaped ( Fig. 143 View FIGURES 138 – 144 ). Bacilliform sclerite folded and longer than subepandrial sclerite ( Fig.143 View FIGURES 138 – 144 ). Specimen length: 2.6 mm; wing length: 3.2 mm. Female. Unknown.

Geographical distribution. Brazil (Pará) ( Fig. 211 View FIGURE 211 ).

Type material. HOLOTYPE ♂, labelled: Brasil, Pará, Rio Nhamundá , 01º37’11”S – 57º37’34”W 25 m; 17–20.v.2008. J.A. Rafael e equipe. Malaise ( INPA).

Holotype condition. Good; right wing mounted on microslide; abdomen in microtube with glycerin.

Etymology. The specific epithet is a noun in apposition and refers to the Nhamundá River, the locality where the specimen was collected.

Remarks. Opeatocerata nhamunda sp. nov. is similar to O. lopesi , by the anterior cercus with subrectangular descendant plate ( Figs 105 View FIGURES 100 – 108 , 142 View FIGURES 138 – 144 ), posterior cercus with rounded apex ( Figs 103 View FIGURES 100 – 108 , 140 View FIGURES 138 – 144 ) and dorsal subbasal pointed projection ( Figs 104 View FIGURES 100 – 108 , 141 View FIGURES 138 – 144 ), and epandrial lobe bilobate ( Figs 103 View FIGURES 100 – 108 , 140 View FIGURES 138 – 144 ). Differs from the latter by the posterior cercus without submedian projection ( Fig. 141 View FIGURES 138 – 144 ), phallus without dorsal appendix and spiniform projections ( Fig. 144 View FIGURES 138 – 144 ) and hypandrium with rounded apex. Opeatocerata lopesi has the posterior cercus with a submedian subtriangular projection ( Fig. 104 View FIGURES 100 – 108 ), phallus with dorsal subapical narrow appendix ( Fig. 107 View FIGURES 100 – 108 ) and spiniform projection, conspicuous ventrally ( Fig. 108 View FIGURES 100 – 108 ), and hypandrium with V-shaped apex ( Fig. 108 View FIGURES 100 – 108 ).