Opeatocerata brasiliensis, 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 : 512-514

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.5285205
persistent identifier	https://treatment.plazi.org/id/03F6943F-E07F-FF91-C7C7-FF7DAAB311FF
treatment provided by	Plazi
scientific name	Opeatocerata brasiliensis
status	sp. nov.

Treatment

Opeatocerata brasiliensis View in CoL sp. nov

( Figs 33–46 View FIGURES 33 – 41 View FIGURES 42 – 46 )

Diagnosis. Yellow species; descendant plate of the anterior cercus subtriangular in posterior view ( Fig. 38 View FIGURES 33 – 41 ); phallus narrow, widening toward the apex, with large dorsal subapical appendix ( Fig. 40 View FIGURES 33 – 41 ); bacilliform sclerite folded and shorter than subepandrial sclerite ( Fig. 39 View FIGURES 33 – 41 ); genital fork with arms longer than base ( Figs 44, 46 View FIGURES 42 – 46 ); tergite 10 undivided ( Fig. 45 View FIGURES 42 – 46 ).

Description. Male ( Fig. 33 View FIGURES 33 – 41 ). Head: Face parallel-sided, brown with gray pruinescence visible in ventral view, about 4X longer than lower width. Ocellar tubercle protuberant, brown with brown pruinescence; ocelli yellow. 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 yellow, shiny ( Fig. 33 View FIGURES 33 – 41 ). Legs yellow, except for 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. Wing ( Fig. 34 View FIGURES 33 – 41 ) hyaline; pterostigma brown, conspicuous, about 2.8X longer than wide. Halter yellow. Abdomen yellow, shiny ( Figs 33, 35 View FIGURES 33 – 41 ); tergite 8 divided in two subrectangular plates; sternite 8 divided in two trapezoidal plates. Terminalia: Anterior cercus with proclinate dorsal projection in lateral view ( Fig. 36 View FIGURES 33 – 41 ), posterior margin with median sinus in dorsal view ( Fig. 37 View FIGURES 33 – 41 ); descendant plate subtriangular in posterior view ( Fig. 38 View FIGURES 33 – 41 ). Posterior cercus with rounded apex in lateral view ( Figs 35, 36 View FIGURES 33 – 41 ), with pointed dorsal subbasal projection in dorsal view ( Fig. 37 View FIGURES 33 – 41 ). Hypoproct subtrapezoidal in lateral view ( Fig. 36 View FIGURES 33 – 41 ) and covering inner surface of the posterior cercus in posterior view ( Fig. 38 View FIGURES 33 – 41 ). Epandrial ventral lobe rounded at apex ( Fig. 36 View FIGURES 33 – 41 ), with spiniform bristles mesially and longer bristles at base ( Fig. 36 View FIGURES 33 – 41 ). Hypandrium longer than wide, with concave apex ( Fig. 41 View FIGURES 33 – 41 ), without long bristles. Phallus narrow, widening toward the apex, longer than hypandrium, with large dorsal subapical appendix ( Fig. 40 View FIGURES 33 – 41 ). Subepandrial sclerite longer than wide, U-shaped ( Fig. 39 View FIGURES 33 – 41 ). Bacilliform sclerite folded and shorter than subepandrial sclerite ( Fig. 39 View FIGURES 33 – 41 ). Specimen length: 3.6 mm; wing length: 3.6 mm. Female ( Fig. 42 View FIGURES 42 – 46 ). Similar to male, except frons brown, shiny, wider than face. Wing with pterostigma about 2.9X longer than wide ( Fig. 43 View FIGURES 42 – 46 ). Terminalia: Tergite 8 subrectangular ( Fig. 44 View FIGURES 42 – 46 ). Sternite 8 with base wider, concave and apex rounded ( Fig. 44 View FIGURES 42 – 46 ). Genital fork wider than long and arms longer than base, separated at apex ( Figs 44, 46 View FIGURES 42 – 46 ). Tergite 10 undivided, with half the length of tergite 8 ( Fig. 45 View FIGURES 42 – 46 ). Sternite 10 with base straight and apex bilobed ( Fig. 45 View FIGURES 42 – 46 ). Specimen length: 3.3 mm, wing length: 3.3 mm.

Geographical distribution. Brazil (Goiás, Mato Grosso and Pará) ( Fig. 211 View FIGURE 211 ).

Type material. HOLOTYPE ♂, labelled: Brasil, Mato Grosso, Chapada Guimarães, 22–30.xi.1983. J.E. Bindá / armadilha malaise ( INPA). Paratypes: Brazil, Mato Grosso. Same data (2 ♂, 4 ♀, INPA). Pará. Marabá, S. Norte. ix.1982. Michael Miles (1 ♂, MPEG). Est[ado] de Goiás. Corumbá, F[azenda]. Monjolinho. Barreto col. (1 ♂, MZUSP).

Holotype condition. Right wing on microslide; abdomen in microtube with glycerin.

Etymology. The specific epithet refers to the country “ Brazil ” where the specimens were collected. Remarks. Opeatocerata brasiliensis sp. nov. differs from other species by the descendant plate of anterior cercus subtriangular in posterior view ( Fig. 38 View FIGURES 33 – 41 ) (in other species, the plate is subtrapezoidal, subrectangular, hourglass-shaped or with lateroventral projection), subepandrial sclerite longer than wide, ( Fig. 39 View FIGURES 33 – 41 ) (in other species it is wider than long or as wide as long) and hypoproct subtrapezoidal in lateral view ( Fig. 36 View FIGURES 33 – 41 ) (rounded, bacilliform or subtriangular in other species).