What on earth did I just kill with fire?

[Frozennova]

Any ideas what this horrible thing is I've just found flying around the garden.

It was about 2 inches from end to end

 

[Frozennova]

Looks like you've killed a harmless Broad-bodied Chaser, a type of dragon-fly. Nice going

That looks exactly like it.

Now I feel terrible for killing something harmless.