I photographed wasps, bees, butterflies, and I continue to do this, but my heart is given to ants. I was literally captivated by these creatures, their amazing grace and elegance. Observing ants in nature, I learned a lot.
It's hard to say ... I didn't notice any discomfort in the ants when the flash fires. However, if we turn off the light in the arena, then the ants quickly move to where it is darker.