Milichiella nigeriae nigeriae
Specimens have been collected swarming and swarming near Baobab.
Differs from congeners in the combination of 4 dc, 2 prsc, and male abdomen with T2-5 silvery microtomentose except for brown spot in middle of T2 and brown posteromedial third or half of T3-4.
Male coloration and vestiture: frons subshiny black, ocellar triangle and orbital plates shiny black, lunule black, basoflagellomere black, face black microtomentose, palpus black; thorax with mesonotum brown microtomentose, scutellum and pleura same except for big shiny spot on an- and katepisternum, scutellum slightly stronger brown microtomentose than mesonotum, wing hyaline, veins light brown, brown spot at tip of vein R1 absent, calypter hyaline, halter black, legs black, hind tarsus with yellow brush; abdomen with T2-5 silvery microtomentose except for brown spot in middle of T2 and brown posteromedial third or half of T3-4.
Morphology. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta medioclinate. In males frons 2.2x as wide at posterior margin than at base of antenna, arista about 6.1x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin with wide notch (6oc) and emargination (2oc).
Thorax: 3+1 dc, 2 prsc, 2 pprn, 1+0.7 prs, 2+0.5 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 (2.4), and ultimate section of vein M1 1.5-1.7x as long as penultimate section. Fore femur slightly stronger setulose, tibial organ absent.
Male abdomen: posteromedial triangular projection of T1 into T2 present. Tergal chaetotaxy: T2 anterolateral corner mostly with 2 lines of setae but triangular extension with more setae, T2-5 silvery parts bare, brown parts setulose, lateral margins with long setae. S5 wider and longer than S4, roundish, posterior margin indented. Male genitalia with hypandrium long, apical seta on cercus longer than surstylus, 1 seta on subepandrial plate, surstylus 0.7x as long than epandrium high, dilated apically (1.5x), slightly bent posteriorly, 2.4x as long as wide, structure of lateral surface smooth, medial surface with 3-5 setulae along anterior margin moving medially basally. Special characters: setae long and thin.
Body length: 2.2-3.5 mm; wing length: 2.8 mm.