Posted by John Carr on 02-09-2019 13:53
#9
From looking at the chapter on Bombyliidae in
Manual of Afrotropical Diptera I suspect subfamily Mariobezzinae. There is a genus
Callynthrophora with clubbed antennae, swollen frons, and tuft of hairs behind metathoracic spiracle, but is is very rare. You would have to consult original literature to see if you have it.