Milichiella spinthera
Differs from congeners in the combination of black basoflagellomere, slightly brown microtomentose mesonotum, 1 prsc, white calypter, and male T2-5 silvery microtomentose.
Male coloration and vestiture: frons subshiny black, ocellar triangle and orbital plates shiny black, lunule dark brown, basoflagellomere black, face greyish microtomentose, palpus black; thorax with mesonotum slightly brown microtomentose, scutellum and pleura same except for shiny spots on an-and katepisternum, wing hyaline, with yellow veins, brown spot at tip of vein R1 very weak, calypter white, halter black, legs black except for yellow basitarsi; abdomen with T2-5 silvery microtomentose.
Morphology. Head: frons with 2 orbital and 1 frontal seta (lower frontal seta probably lost), anterior frontal seta ?. In males frons 2.3x as wide at posterior margin than at base of antenna, arista about 3.3x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin with wide notch (7oc) and narrow emargination (2oc).
Thorax: 2 dc, 1 prsc, 1+0.7 pprn, 1 prs and row of 0.5 setae, 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 (2.5), and ultimate section of vein M1 1.5x 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 1 row of sparse setulae. S5 about 1.3x as long as wide, about 1.8x as long and 2.5x as wide as S4, setulose on posterior half. Male genitalia with apical seta on cercus longer than epandrial setae, 1 seta on subepandrial plate, surstylus 0.7x as long as epandrium high, bent posteriorly, dilated apically (1.9x), 3.2x as long as wide, structure of lateral surface smooth, medial surface with 3-5 setulae along anterior margin moving medially basally.
Body length: 3.1 mm; wing length: 2.5 mm.