These things appeared in friends flat. What are they?
5 points
Luckily they are tiny tiny wasps, like specks of dust. Anything bigger and I would have run!
3 points
Oh, cool! When you said parasitic wasp my brain immediately pictured a tarantula hawk wasp.
2 points
2 points
*
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.