Opeatocerata spinipenis, 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 : 535-537

Opeatocerata spinipenis sp. nov.

( Figs 161–169 )

Diagnosis. Posterior cercus with acuminate apex in lateral view ( Fig. 163 ); without dorsal projections ( Fig. 164 ); hypoproct bacilliform in lateral view ( Fig. 163 ); phallus with narrow base, wider mostly, with a dorsal subapical narrow appendix in lateral view ( Fig. 167 ) and subapical spines laterally best visualized in ventral view ( Fig. 168 ).

Description. Male ( Fig. 161 ). Head: Face slightly divergent toward the proboscis, brown, with gray pruinescence visible in ventral view, about 3X longer than lower width. Ocellar tubercle protuberant, brown with brown pruinescence; ocelli light brown. Scape and pedicel yellow with black bristles, postpedicel with yellow base and brown apex with small yellow bristles, about 1.5X longer than pedicel; stylus about 2.5X longer than postpedicel. Proboscis yellow, slightly longer than head height. Thorax yellow, shiny ( Fig. 161 ). Legs yellow, except for hind femur and tibia with brown apical ring and all tarsomeres 4–5 black; hind tibia and tarsus posterior with anterodorsal and posterodorsal rows of longer bristles. Wing ( Fig. 162 ) hyaline, pterostigma, brown, conspicuous, about 2.9X longer than wide. Halter yellow. Abdomen yellow, shiny ( Fig. 161 ); tergite 8 divided in two subrectangular plates; sternite 8 divided in two subrectangular plates. Terminalia: Anterior cercus with proclinate dorsal projection in lateral view ( Fig. 163 ), with posterior margin with a small median projection in dorsal view ( Fig. 164 ); descendant plate subrectangular in posterior view ( Fig. 165 ). Posterior cercus with acuminate apex in lateral view ( Fig. 163 ); without dorsal projections ( Fig. 164 ). Hypoproct bacilliform in lateral view ( Fig. 163 ) and comma-shaped in posterior view ( Fig. 165 ). Epandrial ventral lobe rounded at apex; spiniform bristles mesially and longer bristles apically ( Fig. 163 ). Hypandrium longer than wide, with rounded apex and small median sinus ( Fig. 169 ), without long bristles. Phallus with narrow base, wider mostly, longer than hypandrium, with a dorsal subapical narrow appendix in lateral view ( Fig. 167 ) and subapical spines laterally best visualized in ventral view ( Fig. 168 ). Subepandrial sclerite wider than long, U-shaped ( Fig. 166 ). Bacilliform sclerite without folds and longer than subepandrial sclerite ( Fig. 166 ). Specimen length: 3.0 mm; wing length: 3.9 mm. Female. Unknown.

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

Type material. HOLOTYPE ♂, labelled: Brasil, Amazonas, Querari (Pelotão) 1º6’N – 69º61’W / 08.iv–16.v.1993. João Vidal ( INPA).

Holotype condition. Mid legs and hind tarsus lost; left wing mounted on microslide; abdomen in microtube with glycerin.

Etymology. From Latin spinosa (spine) and penis (penis), referring to the lateral subapical spines of the phallus.

Remarks. See remarks of O. smithi sp. nov. above.

Figures

FIGURE 211. Geographic distribution of species of Opeatocerata.

FIGURES 161 – 169. Opeatocerata spinipenis sp. nov., holotype ♂. 161. habitus, lateral view; 162. wing; 163. terminalia, lateral view; 164. lobes of cerci, dorsal view; 165. descendant plate of anterior cercus and hypoproct, posterior view; 166. subepandrial sclerite and bacilliform sclerite, dorsal view; 167. ejaculatory apodeme, phallus and hypandrium, lateral view; 168. phallus and hypandrium, ventral view; 169. hypandrium, ventral view.