If you saw this black head coming over the plant, you might be worried…

Make you shiver??

This is a Great Black Wasp

They are “diggers”

 
These large wasps are diggers, meaning they dig tunnels where the females feed their young. These are good as a single female can sting and kill up to 16 grasshoppers each day. That is a great help keeping the population of the grasshoppers down. The good news is they only sting people if they are provoked.