If the queen isn't on the combs I don't bother trying to fish her out of the bottom of an Apidea. I remove the combs then mist the bees inside the apidea hive with water and then shake them all out into a large plastic box /washing up bowl . The queen is then more easily seen and captured for marking/putting into an introduction cage for introducing elsewhere. Combs are replaced, Apidea inverted, floor opened, bees knocked into a corner by giving the bowl a sharp thump so they can then be tipped back into the bottom of the Apidea. Floor closed and one hour later I can then introduce another queen cell.