Wings with the subopaquely whitish windows obliquely across middle equally broad, confluent, continuous in a straight line, forming a conspicuous broadish oblique fascia.
White scales on abdomen above, apart from large, spot-like patches centrally on tergites 2 and 6 (or 7) arranged more transversely in conspicuous bands, the discal parts of which are broken up into small spots, especially across tergites 2-4.
Description in Hesse 1956 (Nomalonia afra):
https://www.biodiversitylibrary.org/page/40844208#page/54/mode/1up
Illustration of head in:
Hull, Frank Montgomery, Bee flies of the world: the genera of the family Bombyliidae Washington, Smithsonian Institution Press 1973
Fig 612: https://www.biodiversitylibrary.org/page/32878064#page/539/mode/1up
Records from: Little Karoo, southern boundary of Great Karoo, Nieuveld Karoo and Namaqualand
iNat observation:
https://www.inaturalist.org/observations/19617003
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