We spent a very enjoyable day being shown and trying high-speed flash photography on Six-Belted Clearwings. Many thanks to Richard Revels for sharing his expertise. The techniques involves using multiple flash guns set to ETTL so that they reduce their power to a very brief flash that freezes the motion of the wings. The first shot is my best effort. If the ambient light is too bright as in the second shot, you get ghosting from movement of body and wings not overridden by the flash.
The males have six yellow bands but the females have only five so I think the third image is a female that appears to have the ovipositor extended. They lay their eggs in the roots of Birds Foot Trefoil.