20181030
We're having an ant ball! Not a formal ant party, but another example of the ants working together like the ant ladder. In this case, it was the pencam's fault. It bumped into a mass of them and they held on to each other to prevent the pencam from pushing them down the the pitcher.
It looks like an ant ball to me
Its around 50 seconds into the video.
Judge for yourself
20181030_180911.mp4