Just found one a Glischrochilus on my carpet - cover with lots of tiny, creepy, moving things

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I just found one of these on my carpet and it was covered in tiny moving things. At first I thought they might be part of the beetle wriggling around but then they moved around so I now assume that they were either: (1) a brood of young ones (seems unlikely) or (2) it was under attack from some tiny creates, perhaps mites of some kind? Are these beetles susceptible to attack from smaller insects/bugs/beetles/mites? If so, which ones (could it be bark beetles)? It would be good to include such information in this article, if available.

For the record, this was today (7th Oct 2015), in the UK, and the beetle was brown with the distinctive patches being orange. I thought it was a dead bee at first but on closer inspection it was alive, a little smaller, had no wings and the orange was in a distinctive patch pattern not stripes.

Context: I have several fruit trees (3x apples + 1 plum) + numerous raspberry, gooseberry, blackcurrant & blueberry bushes plus nut, ash, elder (berry) & 2 v. young oak trees) and there are quite a lot of dropped apples on the lawn & in the compost heap. Also, I recently starting cutting new firewood & bringing old firewood into the house for the woodburner - which I suspect is how the beetle came into the house. (Although I also received a small package from China today.) BTW some of the firewood shows holes of wood-boring beetles, large ones - bigger than regular woodworm holes, so I am pleased to read that the Glischrochilus prey on wood-boring insect larvae.