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HI Pryde, they do look a lot like a dragonfly I agree but much smaller.

A little iridescents goes a long way:)

It sure does. It makes one wonder why they evolved that way? What purpose does it serve?

Maybe grabbing the attention of mates but also of birds and so it is a tradeoff.

Sounds about right. I'm tinkering with infrared photos.

Insects see the world on a variety of wavelengths on the spectrum so it may be interesting to see what they see?