Coniceromyia polychaeta sp. nov.

(Figs. 6B, 9B, 15H, 22A, 25I)

Diagnosis (male). Flagellomere 1 globose, foretibia with four dorsal setae (Fig. 6B), left epandrial process with narrow subepandrial setulose process near base (Fig. 25I).

Material examined. Holotype ♂, BOLIVIA: La Paz: 40km N Caranavi: Cumbre Alto Beni, 15.83ºS, 67.56ºW, 7–15.iv.2004, Malaise trap, 1600m, S. Gaimari, M. Hauser col. [LACM ENT 215635].

Description. Male. Body length, 2.3 mm. Head. Frons dark brown, sparsely setulose, with well-defined median furrow. Flagellomere 1 brown, globose. Arista apical, 2.5 times flagellomere 1 length. Palpus light brown. Gena with two setae. Thorax. Scutum, scutellum, and pleural regions dark brown; anepisternum bare. Foreleg yellowish-brown; mid and hind leg light brown. Foretibia with four dorsal setae and anterodorsal row of strong setulae. Foremetatarsus with anterior bare excavation, anteroapical setulose process, group of setae at base of excavation, and strong seta at base of anteroapical process (Fig. 9B). Foremetatarsus ratio 0.29. Posterior face of hind femur with narrow basoventral band of tiny blunt setulae (Figs. 22A). Hind femur height/length ratio 0.36. Hind tibia with one dorsal seta in basal half. Wing (Fig. 15H). Costa swollen, 0.39 of the wing length; R 2+3 absent; M 1 concave, curved posteriorly at apex; M 2 slightly concave, except apical fourth slightly convex, CuA 1 -M 2 /M 2 -M 1 ratio 1.61; CuA 1 slightly sinuous. Halter white. Abdomen. Tergites dark brown, with shining pubescence. Hypopygium light brown (Fig. 25I). Left epandrial process with narrow subepandrial setulose process near base. Margin of right lobe of hypandrium without projection.

Distribution. Known from a single mid-elevation site in Bolivia.

Etymology. Name derived from the Greek roots poly (many) and chaite (long hair, seta), referring to the foretibia with four dorsal setae of this species.