#1
A hefty looking gent from Chongwe, East of Lusaka City, Zambia, March 2013 (Mid to late rains, temperature ~32 Celsius, day was still and sunny)
In thicket of invasive Mexican Daisy, in Orchard/scrub complex.
Probably 14-16mm, seemed a little larger than Eristalis tenax from UK, but in same ballpark size.
Any takers?
[EDIT - updated to 'Phytomia cf. Natalensis', from 'Eristalinae', following reply by Paul Beuk]