Hi Paul, when did you last inspecting the tray? It could just be some capping that opportunistic SHB that were kicked out of the hive have laid some eggs in and the larva is feeding on this. It would be important to inspect the brood box to see if there is any pest bothering the bees.
I think you have a problem there. I agree with Kieran to do a brood inspection.
What I think is happening is hive beetles got started on some brood, which the bees are attempting to overwhelm, as evidenced by the chewed up brood comb in the tray.
It’s more than likely that the chewed up comb could be drone brood, on account that recently emerged drones will congregate adjacent to where they emerge. Drones do no defending, which includes chasing beetles.
Another possibility could be a shortage of workers in relation to the amount of frames containing brood & or pollen.
Just some added information: Beetles will lay eggs in unprotected {by workers) brood, pollen & dead bees.
Thanks for the replies, really appreciate the help in here.
I’ve got some cold weather by our standards at the moment, 12C max day temp. Is this too cold to open up the hive? And if the SHBs are rampant, what can I do while I’m in there, apart from squish the little monsters?
These are great for giving the bees a place to push SHBeetles into- Just barely fill them with enough oil to coat the bottom of the trap, and place one or two in between frames flush with the top of the frames.