Milichiella chocolata
Differs from congeners in the combination of posterior eye margin without notch but with emargination, 3-4 prsc, hyaline calypter with brown margin, and male T2-5 slightly brown microtomentose except for shiny tip of T5.
Male coloration and vestiture: frons subshiny black, ocellar triangle and orbital plates slightly brown microtomentose, lunule brown, basoflagellomere black, face greyish microtomentose, palpus black; thorax with mesonotum slightly brown microtomentose, scutellum and pleura same except for shiny spot on an- and katepisternum, wing hyaline, veins brown, brown spot at tip of vein R1 weak, calypter hyaline with brown margin (var.: light brown margin), halter black, legs black; abdomen with T2-5 slightly brown microtomentose except for shiny tip of T5.
Morphology. Head: frons with 2+1 orbital and 2+0.5 frontal setae, middle frontal seta medioclinate. In males frons 2.0x as wide at posterior margin than at base of antenna, arista about 4.0x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin without notch but with emargination (2oc).
Thorax: 4+1 (var.: 2) dc, 3+1 or 4+1, (var.: 1) prsc, 1 pprn, 2 prs and row of 0.7 setae, 2+0.8 keps setae, posterior prsc about as long as posterior dc, seta between posterior prsc and posterior dc absent. Wing with vein R4+5 and M1 converging (2.2), and ultimate section of vein M1 2.5x as long as penultimate section. Fore femur strongly setulose, tibial organ absent.
Male abdomen: posteromedial triangular projection of T1 into T2 weak. Tergal chaetotaxy: T2 anterolateral corner with more than 3 lines of setae, T2-5 setulose. S5 1.5x as long as wide, 1.5x as long and 1.1x as wide as S4, roughly rectangular, posterior margin indented, setulose. Male genitalia with apical seta on cercus not longer than epandrial setae, 1 seta on subepandrial plate, surstylus 1.7x as long as epandrium high, bent posteriorly, dilated apically (2.3x), 9.8x as long as wide, structure of lateral surface honeycomb-like, medial surface without setulae but with long sensilla at anterior margin and in middle.
Special characters: mesonotal setulae scarce, setae long, setae on lunule as long as interfrontal setulae.
Body length: 2.5 mm; wing length: 2.5 mm.