Differs from congeners in the combination of relatively long pubescent basoflagellomere and arista, reddish brown microtomentose mesonotum and general habitus.
Male coloration and vestiture: frons brown, ocellar triangle and orbital plates brown microtomentose, lunule black, basoflagellomere black, basally very slightly lighter sometimes, face greyish microtomentose, palpus black; thorax with mesonotum densely reddish brown microtomentose, scutellum same, pleura brown microtomentose, wing hyaline, veins light brown, brown spot at tip of vein R1 absent, calypter brown, halter black, legs black except for yellow tips of tibiae and basitarsi; abdomen with T2-5 silvery white microtomentose except for narrow anterolateral corner of T2 and brown microtomentose posterior extended half of T5.
Morphology. Head: frons with 2+0.4 orbital and 2 frontal setae, anterior frontal seta medioclinate. In males frons 1.5x as wide at posterior margin than at base of antenna, arista about 4.2x as long as basoflagellomere wide, pubescence on arista long, about twice as long as base of arista wide, posterior eye margin with slight notch (3oc) and emargination (2oc).
Thorax: 3+1 dc, 1? prsc, 1 pprn, 1 prs, 2 keps setae, posterior prsc less than 0.8x as long as posterior dc, seta between posterior prsc and posterior dc small. Wing with vein R4+5 and M1 weakly converging (1.4), and ultimate section of vein M1 3.1x as long as penultimate section. Fore femur normal setulose, tibial organ absent.
Male abdomen: posteromedial triangular projection of T1 into T2 very weak. Tergal chaetotaxy: T2 anterolateral corner with 2-3 lines of setae, T5 posterior half with long setae, silvery parts without setae. S5 1.1x as long as wide, 1.7x as long and 9.8x as wide as S4, triangular with posterior margin strongly indented, few setulae. Male genitalia with ventral triangular lappet on pregonite; apical seta on cercus slightly longer than epandrial setae, 1 seta on subepandrial plate, surstylus at least 0.6x as long as epandrium high, dilated apically, structure of lateral surface smooth, medial surface with long sensilla along anterior margin, shorter sensilla at margin.
Special characters: first flagellomere and arista relatively long pubescent; abdomen large in relation to head and thorax; wing relatively broad, silvery microtomentum on male tergites long, male genitalia with triangular lappet on pregonite.
Body length: 2.6 mm; wing length: 2.4 mm.