thoroughly explore the system after you win vs the queen, you should find a couple of other things.
I am assuming here you are referring to the 5650 tons ships in orbit around a planet. Miners or something I'd guess? Hive spawners? Hive luxury resort facilities XD ? Whatever they were, I am told my planets are selling insect parts as curiosities this week....
If there's something else, then I have missed it, but it's strange considering I surveyed the entire system. Except from a planet 800 billions of kilometers away....