. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 92 ANNALS OF THE SOUTH AFRICAN MUSEUM Tomomyza nitidula n. sp. Body and legs entirely black, even facial region black, only hind margins of tergites 1-4 and to a certain extent also 5 and 6 ivory yellowish, these hind margins extending ring-like right round from side to side, the margins of tergites 1-4 usually more conspicuous; integument of greater part of body, especially head above, facial region, sides behind eyes, thorax and scutellum above, pleurae and sides of tergite 1 brilliantly shining, p
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 92 ANNALS OF THE SOUTH AFRICAN MUSEUM Tomomyza nitidula n. sp. Body and legs entirely black, even facial region black, only hind margins of tergites 1-4 and to a certain extent also 5 and 6 ivory yellowish, these hind margins extending ring-like right round from side to side, the margins of tergites 1-4 usually more conspicuous; integument of greater part of body, especially head above, facial region, sides behind eyes, thorax and scutellum above, pleurae and sides of tergite 1 brilliantly shining, polished in appearance, even the abdomen more shining than in most species; integument of ocellar and frontal parts smooth, that of facial region shining, but with fine microsculpture; thorax and scutellum with very fine and sparse puncturation; pleurae predomi- nantly smooth and polished; abdomen very finely ruguloso-punctate from tergite 2 to apex. Vestiture in form of black, bristly hairs on ocellar and frontal parts and fine, greyish white to sericeous whitish hairs on thorax and scutellum, upper part of mesopleuron and on sides of tergite 1, that on sides of thorax, on humeral angles, mesopleuron and on scutellum longest; fine, setae-like pile on abdomen black, denser and more conspicuous towards apex; silvery pruinescence present only on sides of facial region, more conspicuous in $, and as a longitudinal band behind eyes and feebly or faintly on metapleural part above hind coxae; fine hairs on legs very dark blackish brown or black, the fine spicules on tarsi below yellowish. Wings vitreous hyaline, iridescent; veins dark brownish to blackish brown; venation as in other species with uninfuscated wings; two submarginal cells present, the base of vein between these two cells, however, tending to be without a stump in some specimens; halteres with their apical parts and the knobs whitish or ivory white. Head with the interocular space on vertex in $ about 2-4 times distance
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
