Chris Lambkin on iNat has indicated: impossible to separate 3 genera from this image, and even with a specimen its tricky
And suggested it should then be: Tribe Villini
Chris' qualifications:
Taxonomist of Bombyliidae (Beeflies) and Therevidae (Stiletto Flies) especially Australian. Complete phylogenetic analyses of morphological and molecular data, especially of Diptera (True Flies) to estimate evolutionary relationships upon which to base classifications.
1,897,902 sightings of 21,103 species in 9,307 locations from 12,950 contributors
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