I saw one of these parasitic wasps in the garden…
… which turns out to be Gasteruption jaculator. Nice, innit?
Because it was long and thin with a light tip to the ovipositor, it looked sort of like a small, delicate blue-tailed damselfly when it was flying around the flowerbeds.
» the photo is © nutmeg66 and used under a CC nc-nd-sa licence.