Long-legged fly
Long-legged flies are tiny, brightly colored, and common. You find them on broad-leaved plants looking around for smaller flies to lunch on:
Some are iridescent green like this one, some are orange/red. One of the crowd of interesting bugs you can find on a milkweed or blackberry leaf in midsummer.
Nature Diary 
Hi Thomas,
I’ve been following your blog for a while now, but I’m still surprised by the sharpness and beauty of your pictures. This one is awesome as usually!!!
Love the detail and color here, Tom. And the leaf make for such a simple yet beautiful background. Very well done.
Hi Thomas,
Wow great picture. Is that the same as the one i got in this macro post (second image9. It looks very similar!!
This is absolutely stunning, would you be willing to divulge what you shoot with? Is this a macro specific lens?
Thanks, Sarah! I took this with a Canon macro lens and a 2x teleconverter, giving 2x magnification. A standard macro lens alone would not get this magnification.