Opeatocerata curvipenis, 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 : 517-518

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.5285229
persistent identifier	https://treatment.plazi.org/id/03F6943F-E07A-FF8D-C7C7-FD86A8DD1137
treatment provided by	Plazi
scientific name	Opeatocerata curvipenis
status	sp. nov.

Treatment

Opeatocerata curvipenis View in CoL sp. nov.

( Figs 64–79 View FIGURES 64 – 73 View FIGURES 74 – 79 )

Diagnosis. Tergites with 3–6 black paramedian subretangular spots ( Figs 66, 67 View FIGURES 64 – 73 ); anterior cercus without or with reduced dorsal projection in lateral view ( Figs 68, 69 View FIGURES 64 – 73 ); phallus curved ventralward at apex ( Fig. 72 View FIGURES 64 – 73 ); genital fork narrow at base and arms longer than base, separated at apex ( Figs 77, 78, 79 View FIGURES 74 – 79 ); tergite 10 divided in two subtriangular plates ( Figs 77, 78 View FIGURES 74 – 79 )

Description. Male ( Fig. 64 View FIGURES 64 – 73 ): Face parallel-sided, dark brown with gray pruinescence visible in ventral view, about 6X longer than lower width. Ocellar tubercle protuberant, dark 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 dark yellow, shorter than head height. Thorax dark yellow, shiny ( Fig. 64 View FIGURES 64 – 73 ). Legs yellow, except by hind femur and tibia with brown apical ring and all tarsomeres 3–5 black; mid and hind tibia and tarsi with anterodorsal and posterodorsal rows of longer bristles; hind tibia with anteroventral row of longer bristles. Wing ( Fig. 65 View FIGURES 64 – 73 ) hyaline, pterostigma brown, conspicuous, about 2.8X longer than wide. Halter yellow. Abdomen yellow; tergites with 3–6 black paramedian subrectangular spots ( Figs 64, 67 View FIGURES 64 – 73 ); tergite 8 divided in two subrectangular plates; sternite 8 divided in two trapezoidal plates. Terminalia: Anterior cercus without or with reduced dorsal projection in lateral view ( Figs 66, 68 View FIGURES 64 – 73 ); descendant plate subrectangular in posterior view ( Fig. 70 View FIGURES 64 – 73 ). Posterior cercus with rounded apex and median subtriangular projection in lateral view ( Figs 66, 68 View FIGURES 64 – 73 ); without dorsal projections ( Fig. 69 View FIGURES 64 – 73 ). Hypoproct subtriangular in lateral view ( Fig. 68 View FIGURES 64 – 73 ) and comma-shaped in posterior view. Epandrial ventral lobe acuminate apically ( Figs 66, 68 View FIGURES 64 – 73 ); with spiniform bristles apically and longer bristles mesially ( Fig. 68 View FIGURES 64 – 73 ). Hypandrium wider than long, with concave apex ( Fig. 73 View FIGURES 64 – 73 ), without long bristles. Phallus wider medially and narrowing towards t apex, with apex curved ventrally, longer than hypandrium ( Fig. 72 View FIGURES 64 – 73 ). Subepandrial sclerite wider than long, V-shaped ( Fig. 71 View FIGURES 64 – 73 ). Bacilliform sclerite without folds and longer than subepandrial sclerite ( Fig. 71 View FIGURES 64 – 73 ). Specimen length: 3.2 mm; wing length: 3.9 mm. Female ( Fig. 74 View FIGURES 74 – 79 ). Similar to male, except frons brown, shiny and wider than face. Face about 4X longer than lower width. Wing ( Fig. 75 View FIGURES 74 – 79 ) more infuscated, pterostigma about 3X longer than wide, M1 and M2 veins not reaching wing margin. Terminalia: Tergite 8 subrectangular ( Fig. 78 View FIGURES 74 – 79 ). Sternite 8 uniformly wide, straight basally and rounded apically ( Fig. 78 View FIGURES 74 – 79 ). Genital fork with narrow base, longer than wide, arms longer than base and separated apically ( Figs 77, 78, 79 View FIGURES 74 – 79 ). Tergite 10 undivided, longer than half the length of tergite 8 ( Figs 77, 78 View FIGURES 74 – 79 ). Sternite 10 straight at base and bilobed at apex ( Fig. 78 View FIGURES 74 – 79 ). Specimen length: 3.3 mm, wing length: 3.9 mm.

Geographical distribution. Costa Rica (La Suiza and San Mateo) ( Fig. 211 View FIGURE 211 ).

Type material. HOLOTYPE ♂, labelled: La Suiza C[osta] R[ica], Sep[tember]. Pablo Schild / AL Melander Collection, 1961 ( USNM). Paratypes: Costa Rica, Cartago. Same data (1 ♂, 1 ♀, INPA). idem, mar (1 ♂, USNM); idem, jun (1 ♂, INPA). idem, aug[ust] (2 ♂, 2 ♀, USNM). Alajuela. San Mateo, Higuito, Pablo Schild Coll. (1 ♂, 1 ♀, INPA). Pedregosa, D.L. Rounds / AL Melander Collection, 1961 (1 ♂, USNM).

Holotype condition. Abdomen in microtube with glycerin.

Etymology. From the Latin curvus (curved) and penis (penis), referring to the ventrally curved apex of the phallus.

Variation. Body length ranging from 3.0 to 3.8 mm.

Remarks. Opeatocerata curvipenis sp. nov. differs from other species by the following characters: Anterior cercus without or with reduced dorsal projection in lateral view ( Figs 66, 68 View FIGURES 64 – 73 ) (in the other species anterior cercus has a well developed dorsal projection), epandrial lobe acuminate ( Figs 66, 68 View FIGURES 64 – 73 ) (in other species, the lobe is bilobed, rounded or truncated) and phallus curved downward ( Fig. 72 View FIGURES 64 – 73 ) (in other species, the phallus is curved upward).