One of the most common parasitic wasps in Europe is Diplazon laetatorius. The eggs are laid in the pupae of various hover flies, especially species belonging to the Tenax-group (Drone Flies). Even though it is very common, it is not often seen by people. When you do spot it, look at it carefully, because it is a beautiful animal indeed! The animal depicted here is likely to be a Diplazon species, but probably not Diplazon laetatorius.