Milichiella javana
Content
Description
Body length: >2.5 mm; wing length: 2.8 mm.
Male coloration and vestiture: frons subshiny black, ocellar triangle and upper orbital plates shiny black, lunule brown or black, basoflagellomere black, face greyish microtomentose, palpus black; thorax with mesonotum slightly brown microtomentose, scutellum and pleura brown microtomentose, except for shiny spots on an- and katepisternum, wing hyalin, veins yellow, brown spot at tip of vein R1 weak, calypter white with brown margin, halter black, legs black except for yellow basitarsi; abdomen with T2-5 silvery microtomentose except for anterolateral corner of T2 and shiny black posterolateral corner of T5.
Morphology. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta medioclinate. In males frons 2.5x as wide at posterior margin than at base of antenna, arista about 3.8-4.1x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin with wide notch (6oc) and narrow emargination (2oc).
Thorax: 3+1 dc, 2 prsc, 2 pprn, 1+0.8 prs and row of shorter 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 (2.9), and ultimate section of vein M1 1.8x 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 mostly with 2 lines of setae but triangular extension with more, T2-5 posterior margin with 1-2 rows of setulae, more on lateral sides of T2; T5 shiny parts with long setae. S5 1.2x as long as wide, 2.0x as long and 2.2x as wide as S4, posterior margin indented, setulose on posterior half. Male genitalia with apical seta on cercus longer than epandrial setae and 1 setae on subepandrial plate, surstylus 0.8x as long as epandrium high, bent posteriorly, dilated apically (1.6x), 2.7x as long as wide, structure of lateral surface smooth, medial surface with 3-5 setulae along anterior margin moving medially basally.
Male coloration and vestiture: frons subshiny black, ocellar triangle and upper orbital plates shiny black, lunule brown or black, basoflagellomere black, face greyish microtomentose, palpus black; thorax with mesonotum slightly brown microtomentose, scutellum and pleura brown microtomentose, except for shiny spots on an- and katepisternum, wing hyalin, veins yellow, brown spot at tip of vein R1 weak, calypter white with brown margin, halter black, legs black except for yellow basitarsi; abdomen with T2-5 silvery microtomentose except for anterolateral corner of T2 and shiny black posterolateral corner of T5.
Morphology. Head: frons with 2 orbital and 2 frontal setae, anterior frontal seta medioclinate. In males frons 2.5x as wide at posterior margin than at base of antenna, arista about 3.8-4.1x as long as basoflagellomere wide, pubescence on arista very short, posterior eye margin with wide notch (6oc) and narrow emargination (2oc).
Thorax: 3+1 dc, 2 prsc, 2 pprn, 1+0.8 prs and row of shorter 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 (2.9), and ultimate section of vein M1 1.8x 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 mostly with 2 lines of setae but triangular extension with more, T2-5 posterior margin with 1-2 rows of setulae, more on lateral sides of T2; T5 shiny parts with long setae. S5 1.2x as long as wide, 2.0x as long and 2.2x as wide as S4, posterior margin indented, setulose on posterior half. Male genitalia with apical seta on cercus longer than epandrial setae and 1 setae on subepandrial plate, surstylus 0.8x as long as epandrium high, bent posteriorly, dilated apically (1.6x), 2.7x as long as wide, structure of lateral surface smooth, medial surface with 3-5 setulae along anterior margin moving medially basally.
Diagnosis
Differs from congeners in the combination of slightly brown microtomentose mesonotum, 4 dc, white calypter with brown margin, and silvery microtomentose male T2-5.
Citation
Oriental catalog (Sabrosky 1977: Family Milichiidae, pp. 275-276. – In: Delfinado & Hardy, A catalog of the Diptera of the Oriental Region 3, x+854pp: 273)
type information (de Jong &H. 2000: The types of Diptera described by J. C. H. de Meijere: viii+271pp: 102)
citation (de Meijere &J.C.H. 1918: Studien über südostasiatische Dipteren. XIV. – Tijdschr. Ent. 60: 275-369: 353)