These things appeared in friends flat. What are they?
Gonna be honest chief, I would sooner burn my house down than live with wasps.
But thinking about it, I’m willing to bet that house centipedes would clear them up too. Those voracious little buggers eat everything.
Luckily they are tiny tiny wasps, like specks of dust. Anything bigger and I would have run!
Oh, cool! When you said parasitic wasp my brain immediately pictured a tarantula hawk wasp.
The parasitic ones (well, parasitoid since they live free as adults) are very different, sometimes literally microscopic, and never harmful to humans AFAIK.
Gruesomely fascinating and widely studied, though. Relevant recent XKCD.