The word locally (central NY) is that supersedure was remarkably common this year, for some strange reason. I had a few colonies which were doing great, building up with first-season queens (some reared, some bought), only to find the queen GONE after filling the hive with a beautiful brood pattern. Supersedure/emergency queen cells would be scattered through nice solid patches of sealed brood. However, no eggs or young larvae. No swarming involved, either. I mentioned this to a friend running abt 200 colonies up north of here and he mentioned that he and others had been seeing much the same thing. Could this be more than coincidence? Possibly related to the Apistan...? Hmm.