So, after checking on a swarm with a suspected virgin queen, that was captured 24 days ago, I finally saw larvae. Nothing is capped yet. The bees have only drawn worker comb, no drone comb. There is a small patch of larvae in one frame that has half the cells left open. The rest of the frames are filled with syrup/nectar. I am concerned about the size of the larvae. It looks like she might be a drone layer. What is a reasonable time to wait to determine a newly mated queen's laying ? The workers built two open queen cells (quite a bit longer than cups) on a frame that is otherwise capped syrup, which seems a little odd. I have not tried to give this colony brood from another hive yet.