Male coloration and vestiture: frons subshiny black, ocellar triangle and upper orbital plates shiny black, lunule black, basoflagellomere black, face greyish brown microtomentose, palpus black; thorax with mesonotum brown microtomentose, but less so than scutellum, scutellum and pleura brown except for shiny spots on an-and katepisternum, wing hyaline, veins yellow, brown spot at tip of vein R1 absent, calypter hyaline, halter black, legs black except for distal tip of fore and mid tibia yellow basitarsi; abdomen with T2-5 silvery microtomentose.
Morphology. Head: frons with 2 orbital and 2+0.5 frontal setae, middle frontal seta medioclinate. In males frons 2.2x as wide at posterior margin than at base of antenna, arista about 4.0x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin with notch (5oc) and emargination (2oc).
Thorax: 2 dc, 2 prsc, 1+0.8 pprn, 1+0.4 prs, 2+0.7 keps setae, posterior prsc about as long as posterior dc, seta between posterior prsc and posterior dc present. Wing with vein R4+5 and M1 converging (2.1), and ultimate section of vein M1 2.2x as long as penultimate section. Fore femur normal setulose, tibial organ absent.
Male abdomen: posteromedial triangular projection of T1 into T2 present. Tergal chaetotaxy: T2 anterolateral corner with 2-3 lines of setae, T2-5 posterior margin with 1 row of scarce setulae. S5 1.3-1.4x as long as wide, 1.9-2.2x as long and 1.8-2.5x as wide as S4; setulose, posterior margin only slightly indented. Male genitalia with apical seta on cercus as long as longest epandrial seta, 1 seta on subepandrial plate, surstylus about as long as epandrium high, dilated apically (1.6-2.0x), 5.4-7.1x as long as wide, structure of lateral surface smooth, medial surface with 3-5 setae along anterior margin moving medially basally.
Body length: 2.9 mm; wing length: 2.9 mm.