So I was dealing with a swarm in a solar system one jump away from Sol. Since it was so close I didn't want to give them too much time to build up. So I built a fleet of destroyers with anti-FAC missiles. I was able to destroy the soldiers handily, although it a lot of missiles. I wasn't able to launch fast enough to kill the queen so I lured it into the outer system and hunted down the workers.
I did make the mistake of getting a bit too close while trying to figure out its range and lost a few destroyers to meson fire. So I figured it would be able to do eat the wrecks and rebuild. But I figured I'd just come back once the wrecks were gone and kill whatever had hatched. Then I would spend a few years researching enough beam tech to outrange its meson cannons and come back for the queen.
But then I spotted a new contact. It was right on top of the queen, but it was a different class than I had seen before. At first I thought maybe there was a new type of Swarm I didn't know about, but then I checked my sensor logs and it's an entirely new alien species. Right on top of the queen and apparently not fighting the swarm.
I was confused. I attempted to get within sensor range to try and get a look at it, but it launched a bunch of of really big ship killers at me and killed my scout.
I didn't think any of the swarm could launch missiles. But I wouldn't think any other race would ally with the swarm. So I have no idea what's going on.
Anyone have any hints?