Moderator - In Memorium
Aylett, VA 10-frame double deep Langstroth
Yes, you lost whatever swarm had moved in, although i suspect it was very small. On the side showing, eggs are clearly visible. The black spots are dead larvae that had already hatched on the backside of that bit of comb and are now dried up. I would not worry about it unless there is something about the trap that made them find better accommodations.