Hello everyone,
  The queen cell in question was a swarm cell. Over the course of three
weeks I saw the comb drawn out and the queen cup started.
 Last week the queen visited the frame and laid eggs in all the cells,
even in the queen cup. This was observed on Friday July 16. On Tuesday
the 20'Th The egg was hatched and the larva was swimming in royal jelly.
The few minutes the frame was out the nurse bees were visiting the cell.
  Today I was adjusting a colony removed from a house and decided to
take a look at the cell.
This is my reason for writing. The cell was empty. What would cause
this?

Thomas J. Martin
Shippensburg, Pennsylvania

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