Differs from congeners in the combination of brown microtomentose mesonotum, 2 dc, 1 pprn, brown calypter, black legs, and silvery microtomentose male T2-5.
Milichiella sp. A is very similar to M. argentea and probably represents a variety of this species.
Male coloration and vestiture: frons subshiny black, ocellar triangle and orbital plates shiny black, lunule black, basoflagellomere black, face brown microtomentose, palpus black; thorax with mesonotum brown microtomentose, scutellum and pleura same, except for shiny spots on an- and katepisternum, wing hyaline, veins light brown, brown spot at tip of vein R1 absent, calypter brown or light brown, with yellow hairs, halter black, legs black; abdomen with T2-5 silvery microtomentose. Female coloration and vestiture: halter black, abdomen with T2-4 brown microtomentose, T5 shiny.
Morphology. Head: frons with 2 orbital and 2+0.5 frontal setae, middle frontal seta medioclinate. In males frons 2.8x as wide at posterior margin than at base of antenna, arista about 3.7x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin with notch (6oc, female 4oc) and emargination (1-2oc).
Thorax: 2 dc, 1 prsc, 1 pprn, 1+0.7 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 (2.1), and ultimate section of vein M1 1.7x 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 with 2-3 lines of setae, T2-5 posterior margin with one row of setulae. S5 1.2x as long as wide, 1.7x as long and 2.6x as wide as S4, roughly triangular shape, setulose with more and longer setulae at posterior margin. Male genitalia similar to M. unicolor, 1 seta on subepandrial plate, surstylus 0.7x as long as epandrium high, bent posteriorly, dilated apically (1.5x), 3.2x as long as wide, structure of lateral surface smooth, medial surface with 4-5 setulae along anterior margin moving medially basally).
Special characters: palpus wide.
Body length: 2.5 mm; wing length: 2.7 mm.