#3
You are a reverse victim of mimicry. This is the order many Syrphdiae mimic.
I think tribe Bembicini (Hymenoptera, Crabronidae). Is the area sandy? The tribe nests in sand.
#5
Thank you John and Ectemnius for your reactions to this fly!
John, the area may be sandy, but there were many of these flowers.
Regards,
Hedy