Syrphid Fly - Mallota sp.
Diptera Family Syrphidae
This female Syrphid fly is undoubtedly the largest fly in this family I've ever seen - nearly 20mm from antennae to wingtips. I'm not sure if this fly is mimicking a bumblebee (probably) or mimicking a robber fly mimicking a bumblebee. Live adult Syrphid fly photographed in the wild at Winfield, Illinois, USA.

This female Syrphid fly is superb bumble bee mimic.

 
 

  

              
 
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