Opeatocerata cylindrophalllus, 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 : 519-521

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.5285235
persistent identifier	https://treatment.plazi.org/id/03F6943F-E064-FF8E-C7C7-FA76AD761217
treatment provided by	Plazi
scientific name	Opeatocerata cylindrophalllus
status	sp. nov.

Treatment

Opeatocerata cylindrophalllus sp. nov.

( Figs 80–89 View FIGURES 80 – 89 )

Diagnosis. Yellow species; sternite 8 undivided ( Fig. 83 View FIGURES 80 – 89 ); phallus subcylindrical, narrower apically, with ventral subapical narrow appendix ( Fig. 88 View FIGURES 80 – 89 ) and subapical expansion laterally, more conspicuous ventrally ( Fig. 89 View FIGURES 80 – 89 ).

Description. Male ( Fig. 80 View FIGURES 80 – 89 ). Head: Face with sides slightly diverging toward the proboscis, 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 2X longer than postpedicel. Proboscis yellow shorter than head height. Thorax yellow, shiny ( Fig. 80 View FIGURES 80 – 89 ). Legs yellow, except for hind femur with black apical ring and all tarsomeres 4–5 brown, hind tibia and tarsus with anterodorsal and posterodorsal rows of longer bristles. Wing hyaline, pterostigma brown, conspicuous, about 2.2X longer than wide ( Fig. 81 View FIGURES 80 – 89 ). Halter yellow. Abdomen yellow, shiny ( Figs 80, 82 View FIGURES 80 – 89 ); tergite 8 divided in two subrectangular plates; sternite 8 undivided ( Fig. 83 View FIGURES 80 – 89 ). Terminalia: Anterior cercus with proclinate dorsal projection in lateral view ( Figs 82, 84 View FIGURES 80 – 89 ), posterior margin with median sinus in dorsal view ( Fig. 85 View FIGURES 80 – 89 ); descendant plate subrectangular and lower margin slightly convex in posterior view ( Fig. 86 View FIGURES 80 – 89 ). Posterior cercus with acuminate apex in lateral view ( Figs 82, 84 View FIGURES 80 – 89 ); without dorsal projections ( Fig. 85 View FIGURES 80 – 89 ). Hypoproct rounded in lateral view and covering mesially the posterior cercus in posterior view ( Fig. 84 View FIGURES 80 – 89 ). Epandrial ventral lobe rounded at apex ( Fig. 84 View FIGURES 80 – 89 ), with spiniform bristles mesially and longer bristles apically. Hypandrium wider than long, with concave apex ( Fig. 89 View FIGURES 80 – 89 ), without long bristles. Phallus subcylindrical, narrower apically, longer than hypandrium, with ventral subapical narrow appendix ( Fig. 88 View FIGURES 80 – 89 ) with lateral and subapical expansions, more conspicuous ventrally ( Fig.89 View FIGURES 80 – 89 ). Subepandrial sclerite wider than long, V-shaped ( Fig. 87 View FIGURES 80 – 89 ). Bacilliform sclerite without folds and longer than subepandrial sclerite ( Fig. 87 View FIGURES 80 – 89 ). Specimen length: 2.7 mm wing length: 2.9 mm. Female. Unknown.

Geographical distribution. Brazil (Mato Grosso) ( Fig. 211 View FIGURE 211 ).

Type material. HOLOTYPE ♂, labelled: Brasil, Mato Grosso, Cáceres. xi. 1984. Malaise. C. Elias ( INPA).

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

Etymology. From the Greek kylindros (cylindrical) and phallos (phallus), referring to the cylindrical-shaped phallus.

Remarks. Opeatocerata cylindrophallus sp. nov. differs from other species of the genus by the undivided sternite 8 ( Fig. 83 View FIGURES 80 – 89 ) (sternite 8 is divided into two plates in other species) and phallus with subapical expansion laterally, more conspicuous ventrally ( Fig. 89 View FIGURES 80 – 89 ) (phallus without lateral subapical expansion in other species).