Opeatocerata hadrophallus, 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 : 521

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.5285239
persistent identifier	https://treatment.plazi.org/id/03F6943F-E066-FF8E-C7C7-FD5EAD3617AC
treatment provided by	Plazi
scientific name	Opeatocerata hadrophallus
status	sp. nov.

Treatment

Opeatocerata hadrophallus View in CoL sp. nov.

( Figs 90–99 View FIGURES 90 – 99 )

Diagnosis. Tergites 3–6 with paramedian subtriangular black spots ( Fig. 93 View FIGURES 90 – 99 ); descendant plate of the anterior cercus subtrapezoidal with a small median constriction in posterior view ( Fig. 96 View FIGURES 90 – 99 ); phallus with narrow base, wider in mostly, pointed apically; short, not extending beyond the hypandrium ( Fig. 98 View FIGURES 90 – 99 ).

Description. Male ( Fig. 90 View FIGURES 90 – 99 ). Head: Face parallel-sided, dark brown with gray pruinescence visible in ventral view, about 4X longer than lower width. Ocellar tubercle protuberant, dark brown with brown puinescence; ocelli brown. Antenna yellow with black bristles; postpedicel about 1.5X longer than pedicel; stylus about 2X longer than postpedicel. Proboscis yellow shorter than head height. Thorax yellow, shiny ( Fig. 90 View FIGURES 90 – 99 ). Legs yellow, except by hind femur and tibia with black apical ring and all tarsomeres 4–5 black; hind tibia and tarsus with anterodorsal and posterodorsal rows of longer bristles. Wing ( Fig. 91 View FIGURES 90 – 99 ) hyaline, pterostigma brown, conspicuous, about 2.2X longer than wide. Halter yellow. Abdomen yellow, shiny; tergites 3–6 with paramedian subtriangular black spots ( Fig. 93 View FIGURES 90 – 99 ); 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 ( Figs 92, 94 View FIGURES 90 – 99 ), posterior margin rounded in dorsal view ( Fig. 95 View FIGURES 90 – 99 ); descendant plate subtrapezoidal with a small median constriction in posterior view ( Fig. 96 View FIGURES 90 – 99 ). Posterior cercus rounded at apex in lateral view ( Figs 92, 94 View FIGURES 90 – 99 ), with dorsal, subbasal, pointed projection ( Fig. 95 View FIGURES 90 – 99 ). Hypoproct subtriangular in lateral view ( Fig. 94 View FIGURES 90 – 99 ) and comma-shaped in posterior view ( Fig. 96 View FIGURES 90 – 99 ). Epandrial ventral lobe rounded at apex ( Figs 94, 94 View FIGURES 90 – 99 ); spiniform bristles mesially and longer bristles apically. Hypandrium wider than long with rounded apex and small median sinus ( Fig. 99 View FIGURES 90 – 99 ), without long bristles. Phallus with narrow base, wider in mostly, pointed apically; short, not extending beyond apex of the hypandrium ( Fig. 98 View FIGURES 90 – 99 ). Subepandrial sclerite wider than long, U-shaped ( Fig. 97 View FIGURES 90 – 99 ). Bacilliform sclerite without folds and longer than subepandrial sclerite ( Fig. 97 View FIGURES 90 – 99 ). Specimen length: 2.6 mm; wing length: 2.6 mm. Female. Unknown.

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

Type material. HOLOTYPE ♂ labelled: Brasil, AM[azonas], Novo Aripuanã, Reserva / Sokagakai, 23.iv.2000. J. Vidal, Arm.[adilha] Malaise ( INPA). Paratypes: Brazil, Amazonas. Parnajaú, Rio Papagaio. vi.2001. Mata terra-firme. 2º00’03’’S 62º43’54’’W / Arm[adilha] malaise. Henriques, Vidal e Silva leg (1 ♂, INPA).

Holotype condition. Wing mounted in microslide; left mid leg, hind legs; abdomen in microtube with glycerin.

Etymology. From the Greek hadros (robust) and phallos (phallus), referring to the robust phallus.

Remarks. Opeatocerata hadrophallus sp. nov is similar to O. stubbsi by the short phallus, not extending beyond the apex of the hypandirum ( Figs 98 View FIGURES 90 – 99 , 178 View FIGURES 170 – 178 ) and posterior cercus with a dorsal pointed projection in dorsal view ( Figs 95 View FIGURES 90 – 99 , 175 View FIGURES 170 – 178 ). Differs from the latter by tergites with paramedian triangular spots ( Fig. 93 View FIGURES 90 – 99 ), posterior cercus without dorsal subapical projection ( Fig. 95 View FIGURES 90 – 99 ) and hypoproct subtriangular in lateral view ( Fig. 94 View FIGURES 90 – 99 ). Opeatocerata stubbsi has tergites with paramedian subrectangular spots ( Fig. 173 View FIGURES 170 – 178 ), posterior cercus with dorsal subapical subtriangular projection in dorsal view ( Fig. 175 View FIGURES 170 – 178 ) and hypoproct subrounded in lateral view ( Fig. 174 View FIGURES 170 – 178 ).