Ah, I think you're right!
We are having an infestation this year of those fuckers, but I've only seen the adult ones until now.
Thank you very much!
Those have become a pest here.
If someone knows how to keep them away, it would be very much appreciated.
Edit: the only thing I've found was manual removing them or spraying them with vinegar and soap water. I've now freed my 3 poor plants of them manually (into a bag with vinegar, soap and hot water)
At least now I know, why all our tomatoes this year started to rot with some mold infection