Opeatocerata smithi Câmara & Rafael, 2014, sp. nov.

Opeatocerata smithi sp. nov.

(Figs 152–160)

Diagnosis. Anterior cercus with a proclinate dorsal projection in lateral view (Figs 154, 155), anterior margin rounded in dorsal view (Fig. 156); epandrium lobe truncate at apex (Fig. 155); phallus subcylindrical, wider medially, with dorsal subapical narrow appendix (Fig. 159).

Description. Male (Fig. 152). Head: Face slightly divergent toward the proboscis, dark brown, with gray pruinescence visible in ventral view, about 4X longer than lower width. Ocellar tubercle protuberant, brown with gray pruinescence; ocelli light brown. Antenna light brown 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. 152). Legs yellow, except for hind femur and tibia with brown apical ring and all tarsomeres 4–5 black; hind tibia with anterodorsal, posterodorsal and posteroventral rows of longer bristles; hind tarsus with anterodorsal and posterodorsal rows of longer bristles. Wing (Fig. 153) hyaline, pterostigma, brown, conspicuous, about 2.4X longer than wide. Halter light yellow. Abdomen yellow, shiny (Fig. 152); tergite 8 divided in two subtriangular plates; sternite 8 divided in two trapezoidal plates. Terminalia: Anterior cercus with a proclinate dorsal projection in lateral view (Figs 154, 155), anterior margin rounded in dorsal view (Fig. 156); descendant plate subrectangular with lower margin slightly bilobate in posterior view (Fig. 157). Posterior cercus with acuminate apex in lateral view (Figs 154, 155); without dorsal projections (Fig. 156). Hypoproct subtriangular in lateral lateral view (Fig. 155) and comma-shaped in posterior view (Fig. 157). Epandrial ventral lobe truncate at apex, spiniform bristles mesially and longer bristles apically (Fig. 155). Hypandrium longer than wide, with rounded apex and median sinus (Fig. 160), without long bristles. Phallus subcylindrical, wider medially, longer than hypandrium, with dorsal subapical narrow appendix (Fig. 159). Subepandrial sclerite wider than long, U-shaped (Fig. 158). Bacilliform sclerite folded and longer than subepandrial sclerite (Fig. 158). Specimen length: 2.9 m; wing length: 3.5 mm. Female. Unknown.

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

Type material. HOLOTYPE ♂, labelled: Brasil, AM[azonas], Maués, Rio Abacaxis, Campina Pacamiri, 04º35’49’’S / 58º13’14’’W, 30–31.v.2008. Malaise na mata. J. A. Rafael e equipe (INPA).

Holotype condition. Postallar, scutellars and acrostichals bristles lost; left wing mounted on microslide; abdomen in microtube with glycerin.

Etymology. The specific name is in tribute to K.G.V. Smith due to his contribution to the knowledge on the Neotropical fauna of Empididae, particularly the Brazilian fauna.

Remarks. Opeatocerata smithi sp. nov. has an anterior cercus with proclinate dorsal projection (Fig. 155), descendant plate subrectangular in posterior view (Fig. 157), subepandrial sclerite U-shaped (Fig. 158) and phallus with dorsal subapical narrow appendix (Fig. 159), all characters similar to O. spinipenis sp. nov.. Differs from the latter by the hypoproct subtriangular in lateral view (Fig. 155), epandrial lobe with truncate apex (Fig. 155) and phallus without lateral spines (Fig. 160). Opeatocerata spinipenis sp. nov. has hypoproct bacilliform in lateral lateral view (Fig. 163), epandrial lobe with rounded apex (Fig. 163) and phallus with lateral subapical spines (Fig. 168).