Ommatius cinthiae Vieira, Castro & Bravo

Vieira, Rodrigo, Castro, Ivan & Bravo, Freddy, 2004, Two new species of Ommatius Wiedemann (Diptera: Asilidae) from Brazil, Zootaxa 764, pp. 1-7 : 2-3

Ommatius cinthiae Vieira, Castro & Bravo new species ( Figs. 1–6 )

Male. Length: body, 12.0 mm; wing, 8.0 mm. Body brownish to black. Face and frons with golden vestiture; face with four brown bristles mystax; FHWR (face­to­head ratio) 1/10.6. Palpus with yellowish to brown setose. FWLR (width­to­length ratio of flagellum) 1/4.8. Occiput with six brown postocular bristles on each side of head, four proclinate.

Mesonotum with three prominent dorsocentral bristles in each row; two notopleural bristles; one postalar bristle; one subalare bristle; prominent anepimeral bristle absent; katatergite with yellow bristles. Scutellum with two weak marginal bristles.

Pleuron mostly grayish tomentose; wing with costal margin slightly dilated. Legs mostly yellow; fore and middle femora with apical fourth brownish to black. Hind femora and hind tibiae with apical one­third brown. Mid femora with a pale, long, thin, preapical, dorsoposterior seta; basal half of middle femora with four anteroventral bristles. Hind femora with four dark brown bristles ventrally, and one basal pale bristle. HFWLR (width­tolength of hind femur) 1/3.6. Hind tibiae with a small, spurlike, apical bristle. Fore and middle tarsi with basal segments in part yellowish; fore tarsus with three yellow bristles in lateral view.

Abdomen with dark brown tomentum in dorsal view; sides of tergites and sternites 1– 3, with pale yellowish vestiture.

Terminalia blackish. Epandrium with truncate apex, and posterior acute projection ( Fig. 1 ); internal margin of epandrium slightly sclerotized ( Fig. 1 ); anterior margin of epandrium with a small protuberance ( Fig. 1 ); lateral margin straight in lateral view ( Fig. 6 ). Hypandrium shield­like with posterior margin triangular and anterior margin straight ( Fig. 5 ). Gonostylus narrow in lateral view, with acute projection at the apex ( Fig. 4 ). Apex of the aedeagus slightly truncate in lateral view ( Fig. 2 ); aedeagal apodeme with round apex in lateral view ( Fig. 2 ). Aedeagal sheath with posterior margin straight in ventral view ( Fig. 3 ).

Type material. Holotype male: Brazil, Bahia, Santa Terezinha municipality, Serra da Jibóia, 19.03.2003, Ivan Castro col. (CUFS).

Etymology. The name cinthiae is dedicated to Cínthia Barreto Chagas. Remarks. Ommatius cinthiae is readily recognized from congeners by the combined characters of the terminalia ( Figs. 1–6 )

Figures

FIGURES 1 – 6. Ommatius cinthiae Vieira, Castro & Bravo, sp. nov. Holotype male. 1. Male terminalia dorsal. 2. Aedeagus lateral. 3. Aedeagus ventral. 4. Right gonostylus. 5. Male terminalia ventral. 6. Male terminalia lateral.