Differs from congeners in the combination of subshiny black ocellar triangle, brown calypter and male abdomen with T2-5 brown microtomentose except for silvery anterior half of T3 and anterior two thirds of T4-5.
Male coloration and vestiture: frons subshiny black, ocellar triangle and orbital plates subshiny black, lunule black, basoflagellomere black, face black microtomentose, palpus black; thorax with mesonotum brown microtomentose, scutellum and pleura same, wing hyaline, anterior margin brown, veins brown, brown spot at tip of vein R1 weak, calypter brown, halter black, legs black except for brown tarsi, fore and hind tarsus with yellow brush; abdomen with T2-5 brown microtomentose except for silvery anterior half of T3 and anterior two thirds of T4-5.
Morphology. Head: frons with 2 orbital and 2+0.5 frontal setae, middle frontal seta medioclinate. In males frons 2.5x as wide at posterior margin than at base of antenna, arista about 5.2x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin with notch (5oc) and narrow emargination (2oc).
Thorax: 3+1 dc, 3+1 prsc, 1+0.6 pprn, row prs, 2 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 (3), and ultimate section of vein M1 1.8x as long as penultimate section. Fore femur strongly setulose, tibial organ absent.
Male abdomen: posteromedial triangular projection of T1 into T2 present. Tergal chaetotaxy: T2 anterolateral corner mostly with 2-5 lines of setae, T2-5 brown parts setulose, except for anterior half or two thirds of T2. S5 about as long as wide, posterior margin about 2.5x as wide as anterior margin, 1.7x as long and 2.8x as wide as S4; posterior half setulose with relatively long setulae. Male genitalia with 1 seta on subepandrial plate, surstylus similar to M. javana, 0.9x as long as epandrium high, dilated apically (1.7x), 3.4x as long as wide, structure of lateral surface smooth, medial surface with 3-5 setulae along anterior margin moving medially basally.
Special characters: thoracic setae very long.
Body length: 3.1 mm; wing length: 2.7 mm.