Opeatocerata agudeloi, 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 : 507-508

Opeatocerata agudeloi sp. nov.

( Figs 8–16 )

Diagnosis. Yellow species; posterior cercus with acuminate apex in lateral view ( Fig. 11 ), without dorsal projections ( Fig. 12 ); phallus subcylindrical, wider at apex, with a narrow dorsal subbasal appendix and ventral subapical appendix ( Fig. 15 ).

Description. Male ( Fig. 8 ). Head: Face parallel-sided, dark brown, without visible pruinescence in ventral view, about 4X longer than lower width. Ocellar tubercle protuberant, dark brown, without pruinescence; ocelli yellow. Antenna yellow with black bristles; postpedicel about 2X longer than pedicel; stylus about 2X longer than postpedicel. Proboscis yellow, shorter than head height. Thorax yellow, shiny ( Fig. 8 ). Legs yellow except hind tibia with apical black ring and tarsomeres 4–5 black; hind tibia and tarsus with anterodorsal and posterodorsal row of longer bristles. Wing ( Fig. 9 ) hyaline; pterostigma brown, conspicuous, about 2.6X longer than wide. Halter yellow. Abdomen yellow, shiny ( Figs 8, 10 ); tergite 8 divided in two subrectangular plates; sternite 8 divided in two trapezoidal plates. Terminalia: Anterior cercus with proclinate dorsal projection in lateral view ( Figs 10, 11 ); concave in dorsal view ( Fig. 12 ); descendant plate with lower margin slightly bilobed and narrower than superior margin in posterior view ( Fig. 13 ). Posterior cercus with acuminate apex in lateral view ( Fig. 11 ), without dorsal projections ( Fig. 12 ). Hypoproct subtriangular in lateral view ( Fig. 11 ) and comma-shaped in posterior view. Epandrial ventral lobe with bilobed apex ( Fig. 11 ), with spiniform bristles mesially on dorsal lobe, and longer bristles at apex of ventral lobe ( Fig. 11 ). Hypandrium longer than wide, with median sinus apically ( Fig. 16 ), without long bristles. Phallus subcylindrical, wider at apex, longer than hypandrium, with long and narrow dorsal appendix and short ventral appendix ( Fig. 15 ). Subepandrial sclerite wider than long, U-shaped ( Fig. 14 ). Bacilliform sclerite folded and longer than subepandrial sclerite ( Fig. 14 ). Specimen length: 3.6 mm; wing length: 3.5 mm. Female. Unknown.

Geographical distribution. Colombia (Leticia) ( Fig. 211 ).

Type material. HOLOTYPE ♂, labelled: Colombia, AMZ [Amazonas], Letícia, Reserva Tanimboca , Km 11 via Tarapacá, 4º13’S; 69º56’W, 24–29.iv.2011, Arm[adilha] Luz. Antonio Agudelo leg. ( CEUA).

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

Etymology. The specific epithet is a tribute to Antonio Agudelo, the specimen collector.

Remarks. Opeatocerata agudeloi sp. nov. is similar to O. mourai sp. nov. by the posterior cercus with acuminate apex in lateral view ( Figs 11 , 132 ), epandrial lobe bilobed at apex ( Figs 11 , 132 ) and phallus with subbasal dorsal appendix ( Figs 15 , 136 ). Differs from the latter by the anterior cercus with proclinate dorsal projection in lateral view ( Fig. 11 ) and phallus with ventral subapical appendix ( Fig. 15 ). Opeatocerata mourai sp. nov. has the anterior cercus with dorsal pro and reclinate projections in lateral view ( Fig. 32 ) and phallus without ventral appendix ( Fig. 136 ).

Figures

FIGURE 211. Geographic distribution of species of Opeatocerata.

FIGURES 8 – 16. Opeatocerata agudeloi sp. nov., holotype ♂. 8. habitus, lateral view; 9. wing; 10. abdomen from tergite 6 to terminalia, lateral view; 11. Terminalia; 12. lobes of cerci, dorsal view; 13. descendant plate of anterior cercus, posterior view; 14. subepandrial sclerite and bacilliform sclerite, dorsal view; 15. ejaculatory apodeme, phallus and hypandrium, lateral view; 16. hypandrium, ventral view.

FIGURES 129 – 137. Opeatocerata mourai sp. nov., holotype ♂. 129. habitus, lateral view; 130. wing; 131. abdomen from tergite 4 to terminalia, lateral view; 132. terminalia, lateral view; 133. lobes of cerci, dorsal view; 134. descendant plate of anterior cercus and hypoproct, posterior view; 135. subepandrial sclerite and bacilliform sclerite, dorsal view; 135. ejaculatory apodeme, phallus and hypandrium, lateral view; 137. hypandrium, ventral view.

FIGURES 26 – 32. Opeatoceratas bare sp. nov., holotype ♂. 26, habitus, lateral view; 27, wing. 28 - terminalia, lateral view; 29. lobes of cerci, dorsal view; 30 descendant plate of anterior cercus, posterior view; 31, subepandrial sclerite and bacilliform sclerite, dorsal view; 32, ejaculatory apodeme, phallus and hypandrium, lateral view.