Ommatius (Pygommatius) lulua, Scarbrough & Marascia, 2003

Scarbrough, Aubrey G. & Marascia, Claudio G., 2003, Revision of Ommatius Wiedemann (Diptera: Asilidae). IV. Pygommatius subgen. nov. with twenty-five Afrotropical species, Zootaxa 228 (1), pp. 1-94 : 43-44

Ommatius (Pygommatius) lulua , sp. n.

Figs. 14 , 160­164

Male. Mostly dark brown to black, red coxae. Length, body 10.8­12.2 mm; wing 9.0­10.0 mm Head: Face yellow tomentose, sparse, short, yellow setae dorsally, longer setae and 2 pencil­like bristles ventrally; 3 thin, brown bristles present; 1.0:7.5­1.0:8.6. Proboscis black. Flagellum twice as long as wide. Frons brown tomentose, dark brown setose. Occiput with 7 brown postocular bristles, longest just forward to one­third forward of posterior margin of eye.

Thorax: Mesonotum dorsally mostly dense brown tomentose, brown­yellow to yellow in grooves, narrow laterally and posteriorly; vestiture brown, sparse setae medially and laterally; bristles stout, 3 dorsocentral and 4 lateral bristles present. Scutellum dorsally brown tomentose, yellow apically, setae sparse, mostly to entirely brown, marginal bristles redbrown to brown. Pleuron mostly black, narrow metapleuron below halter and most of metacoxa red, large black spot ventrally; vestiture mostly yellow, setae sparse, katatergal bristles mostly brown. Halter yellow to red.

Wing ( Fig. 14 ): Dense brown microtrichose apically and posteriorly to middle of m4 cell. Cell r 4 with sides slightly arched medially. Sides of cell m 1 with weak preapical constriction; sides evenly diverge from base. Apex of cell m 3 oblique, beyond base of cell m 1.

Leg: Coxae mostly red, narrow base of middle and hind coxae black. Trochanters red. Femora red with brown anteriorly and dorsally, color extending posteriorly to about dorsal third or half, reddish yellow to yellow elsewhere; bristles absent ventrally, only setae present, mostly yellow, brown on middle femur; HFWLR 1.0:6.0­1.0:6.1. Tibiae mostly yellow, slightly reddish­yellow anteriorly, narrow apex of middle and hind tibiae brown; bristles thin, brown. Tarsi mostly yellow, with apical 3 tarsomeres grading from yellow to brown; hind tarsus mostly brown, basal tarsomere brown­yellow; fore tarsus with 5 yellow bristles laterally, otherwise brown.

Abdomen: Black, apex of tergites brown­yellow, tergites mostly brown tomentose dorsally with brown setae, sides yellowish­brown to yellow with yellow setae. Sternites mostly yellow to yellowish­brown tomentose, setae yellow except brown on sternites 5­8; stout, erect bristles absent.

Termnalia ( Figs. 160­164 ): Brown. Epandrium 3 branched; dorsal branch short, adhering to inner surface of epandrium; ventral branch longer than median branch. Gonocoxite with an oval row of numerous long setae. Hypandrium apically with long bristles.

Female. Unknown.

SPECIMENS EXAMINED. Holotype ♂, paratype ♂, DEMOCRATIC REPUBLIC OF CONGO: Musée Du Congo / Lulua: Kasai / 1928 / Dr. Walker ( MARC).

Distribution. The species is known only from the type locality.

Etymology. Lulua, a noun in apposition, refers to the indigenous people who live in the region near the Lulua River, between the Kasai and Sankuru rivers.

Remarks. A long flagellum, dense tomentum of the mesonotum, and the red pleuron below the halter, the red coxae, trochanters, and femora, and the combined characters of the terminalia ( Figs. 160­164 ) characterize O. lulua .

Figures

FIGURES 11­20. Right wing of male Ommatius (Pygommatius) spp. 11. O. imaginus, sp. n..; 12. O. limbus, sp. n..; 13. O. litoreus sp. n.; 14. O. lulua, sp. n.; 15. O. magnipes, sp. n.; 16. O. ornatipes Engel; 17. O. pectinus sp. n.; 18. O. porticus, sp. n.; 19. O. renudus, sp. n.; 20. O. strigiatus, sp. n.

FIGURES 160­164. Male terminalia of Ommatius lulua, sp. n. 160­162. Lateral, dorsal and ventral views; 163. Gonostylus; 164. Aedeagus, lateral view.