Milichiella argentiventris Hendel, 1931

Male coloration and vestiture: frons subshiny black, ocellar triangle and orbital plates shiny black, lunule black, basoflagellomere black, face greyish microtomentose, palpus black; thorax with mesonotum slightly brown microtomentose, scutellum brown microtomentose, pleura slightly brown microtomentose with shiny spots on anepisternum and katepisternum, wing white, brown spot at tip of vein R1 absent, calypter white, halter black, legs black except for yellow narrow bases and tips of tibiae and bases of tarsi (var.: legs darker); abdomen with T2-5 silvery microtomentose.
Morphology. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta medioclinate. In males frons 2.0x as wide at posterior margin than at base of antenna, arista about 4.3x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin with notch (5-6oc) and slight emargination (1-2oc).
Thorax: 2 dc (var.: 2+1), 2 prsc, 1+0.5 pprn, 1+0.8 prs, 3 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 (3.0), and ultimate section of vein M1 1.9x 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 1-2 rows of setulae. S5 1.2x as long as wide, 1.7x as long and 2.1x as wide as S4; setulose, posterior margin indented (Pl. 6G). Male genitalia similar to M. nigeriae, 1 seta on subepandrial plate, surstylus 0.6x as long as epandrium high, bent posteriorly, dilated apically (1.7x), 2.5x as long as wide, structure of lateral surface smooth, medial surface with 3-5 setulae along anterior margin moving medially basally.
Special characters: silvery microtomentum long.