So I have only met regular bees before. I caught them and then I destroyed the hive to make an own beehive. But this time the bees were red and labeled "killer bees". The thing is that I fought them and caught them in the night, but as soon as the dawn broke they disappeared from my inventory. I this something that killer bees are supposed to do.. or is it a bug? :S

I've also had them disappear (regular bees) when I walked over a trap. But that wasn't the case now.

Anyone have an idea or had something similar happen?

Sounds like a bug to me, but I don't know. I've met killer bees and fought them a little at day time, so I know they can spawn at least at that time; but don't know if they kan be looted or whatever.

You can "loot" them or catch them if you have a bug net. That is how you get them in your inventory. Weird to say the least!

Colony collapse disorder.