Wait hold up, in Dutch we have glimwormen ("shimmer worms" ) but those don't fly! They're actual bioluminecent worms.

Aren't German Glühwürmchen the same thing?

Interesting, interesting. We call the female lightning bugs here glow worms because they are wingless, but today I'm learning that is not the case for all species!

Also Glühwürmchen is a cute word.