Nymph of Some Kind?

The critters are liking my peony buds, but I'm not sure what this is. I cropped it so it's a little grainy, but wondered if anyone can identify it.

[Sue Hecker]

Oooh, I think that's a robber fly. One of my faves to photograph, but so scary-ugly...

[Milanie]

Really clear shot of him. Don't want him to do any damage to your peonies!

[Danette Thompson]

Looks like a nymph!

[Karly]

Beautiful peonies - but the insect is not so beautiful. But necessary in some way, I'm sure:)

[Lynne]

Beautiful capture

[Maggiemae]

what is a nymph anyway! All I can think of is the song, "Nymphs and Shepherds come away?

[Richard Hickey]

Fantastic macro.

[Leslie]

does look like some kind of fly. What a great macro