Ommatius serrajiboiensis 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 : 3-5

Ommatius serrajiboiensis Vieira, Castro & Bravo new species ( Figs. 7–13 )

Male. Length: body, 13.0 mm; wing 10.0 mm. Body dark brown to blackish. Face golden with six brown bristles mystax; FHWR 1/1.8mm. Palpus yellowish setose. FWLR 1/5.8. Occiput with seven dark brown postocular bristles.

Mesonotum with four long dorsocentral bristles in each row; two notopleural bristles; one postalar bristle; one subalare bristle; prominent anepimeral bristle absent. Scutellum with two stout marginal bristles. Pleuron mostly yellowish tomentose. Wing with costal margin slightly dilated.

Legs mostly yellow, fore and middle femora with apical one­third brownish. Mid femora with a pale, long, thin, preapical, dorsoposterior seta; Hind femora with five blackish bristles and one pale basal bristle. HFWLR 1/3.3. Hind tibia with spurlike bristle apically ( Fig. 13 ). Fore and middle tarsi with basal segments in part yellowish; fore tarsus with one yellow bristle in lateral view.

Abdomen with dark brown tomentum in dorsal view; sides of tergites and sternites 1– 4, with pale yellowish vestiture.

Terminalia blackish. Epandrium with truncate apex, with posterior acute projection ( Fig.10 ); lateral margin round in lateral view ( Fig. 12 ). Hypandrium shield­like with the anterior margin rounded, apex triangular and posterior margin with pair of lateral acute projections ( Fig. 11 ). Gonostylus subtriangular, with acute projection at the apex ( Fig. 7 ). Gonocoxite with two blade­like projections nearest the apex in ventral view ( Fig. 11 ). Apex of the terminal filament of the aedeagus acute in lateral view ( Fig. 8 ); aedeagal sheath with anterior margin curved in ventral view and with two small blade­like lateral projections on the base of the edeagal filament ( Fig. 9 ); aedeagal apodeme with posteroventral margin straight at base, in lateral view ( Fig. 8 ).

Type material. Holotype male: Brazil, Bahia, Santa Terezinha municipality, Serra da Jibóia, 15.03.2001, Ivan Castro col. (CUFS).

Etymology. This species is named for the collection locality.

Remarks. Ommatius serrajiboiensis is readily recognized from congeners by the combined characters of the terminalia ( Figs. 7–12 ).

Figures

FIGURES 7 – 13. Ommatius serrajiboiensis Vieira, Castro & Bravo, sp. nov., Holotype male. 7. Right gonostylus. 8. Aedeagus lateral. 9. Aedeagus ventral. 10. Male terminalia dorsal. 11. Male terminalia ventral. 12. male terminalia lateral. 13. Right hind tibia with a spurlike bristle.