Opeatocerata mourai, 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 : 527-530

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.5285267
persistent identifier	https://treatment.plazi.org/id/03F6943F-E06C-FF81-C7C7-F9CCAA1D12F2
treatment provided by	Plazi
scientific name	Opeatocerata mourai
status	sp. nov.

Treatment

Opeatocerata mourai View in CoL sp. nov.

( Figs 129–137 View FIGURES 129 – 137 )

Diagnosis. Anterior cercus with pro and reclinate dorsal projections in lateral view ( Figs 131, 132 View FIGURES 129 – 137 ); hypoproct bacilliform in lateral view ( Fig. 132 View FIGURES 129 – 137 ); phallus subcylindrical, with sclerotized apex and a dorsal subbasal narrow appendix ( Fig. 136 View FIGURES 129 – 137 ).

Description. Male ( Fig. 129 View FIGURES 129 – 137 ). Head: Face slightly convergent toward the proboscis, 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 yellow with black bristles; postpedicel about 1.5X longer than pedicel; stylus about 2.5X longer than postpedicel. Proboscis yellow shorter than head height. Thorax dark yellow, shiny ( Fig. 129 View FIGURES 129 – 137 ). Legs yellow, except for hind femur and tibia with apical black ring; hind tibia with anterodorsal and posterodorsal rows of longer bristles. Wing ( Fig. 130 View FIGURES 129 – 137 ) hyaline, pterostigma, black, conspicuous, about 2.5X longer than wide. Halter yellow. Abdomen dark yellow, shiny ( Figs 129, 131 View FIGURES 129 – 137 ); tergite 8 divided in two subrectangular plates; sternite 8 divided in two trapezoidal plates. Terminalia: Anterior cercus with a pro and reclinate dorsal projections in lateral view ( Figs 131, 132 View FIGURES 129 – 137 ), posterior margin with lateral projections in dorsal view ( Fig. 133 View FIGURES 129 – 137 ); descendant plate subtrapezoidal with lower margin slightly rounded in posterior view ( Fig. 134 View FIGURES 129 – 137 ). Posterior cercus with acuminate apex in lateral view ( Figs 131, 132 View FIGURES 129 – 137 ), without dorsal projection ( Fig. 133 View FIGURES 129 – 137 ). Hypoproct bacilliform in lateral view ( Fig. 132 View FIGURES 129 – 137 ) and comma-shaped in posterior view. Epandrial ventral lobe slightly bilobate at apex ( Fig. 132 View FIGURES 129 – 137 ); spiniform bristles mesially on dorsal lobe and longer bristles apically on ventral lobe ( Fig. 132 View FIGURES 129 – 137 ). Hypandium longer than wide, with concave apex ( Fig. 137 View FIGURES 129 – 137 ), without long bristles. Phallus subcylindrical, sclerotized apex, longer than hypandrium, with a dorsal subbasal narrow appendix ( Fig. 136 View FIGURES 129 – 137 ). Subepandrial sclerite wider than long, U-shaped ( Fig. 135 View FIGURES 129 – 137 ). Bacilliform sclerite without folds, longer than subepandrial sclerite ( Fig. 135 View FIGURES 129 – 137 ). Specimen length: 3.7 mm; wing length: 3.9 mm. Female. Unknown.

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

Type material. HOLOTYPE ♂, labelled: Brasil, AM[azonas], Barcelos, Rio Aracá, Boca do Rio Curuduri 00º05’50,2’’N; 63º17’22,3’’W. 15–19.vi.2010. Varredura. S. S. Oliveira, J.T. Câmara, V. Linard, J.A. Rafael ( INPA). Paratypes: Brazil, Amazonas. same data as holotype (6 ♂, INPA; 2 ♂, NMWC). Barcelos, Rio Aracá, Com[unidade] Bacuquara 00º09’17.5’’N; 63º10’35.2’’W, Arm[adilha] luminosa dossel 25 m. 14.vi.2010, 00–03:00h, J.A. Rafael, P. Dias, R. Machado (1 ♂, MPEG).

Holotype condition. Right hind leg lost; left wing mounted on microslide; abdomen in microtube with glycerin.

Etymology. The specific name is a tribute to Antonio Moura, the senior author’s husband, partner and friend, for his contribution during this work.

Variation. Body length from 3.1–4.0 mm.

Remarks. Opeatocerata mourai sp. nov. is similar to O. agudeloi sp. nov. by the anterior cercus acuminate in lateral view ( Figs 11 View FIGURES 8 – 16 , 132 View FIGURES 129 – 137 ), epandrial lobe with bilobate apex ( Figs 11 View FIGURES 8 – 16 , 119 View FIGURES 114 – 122 ) and phallus with dorsal subbasal appendix ( Figs 15 View FIGURES 8 – 16 , 136 View FIGURES 129 – 137 ). Differs from the latter by anterior cercus with pro and reclinate dorsal projections in lateral view ( Fig.132 View FIGURES 129 – 137 ) and phallus without ventral appendix ( Fig. 136 View FIGURES 129 – 137 ). Opeatocerata agudeloi sp. nov. has the anterior cercus with only a proclinate dorsal projection in lateral view ( Fig. 11 View FIGURES 8 – 16 ) and phallus with central appendix originating on the distal 1/4 ( Fig. 15 View FIGURES 8 – 16 ).