The Lyons Share

As I was walking back from the bar at the Shepherd & Dog in Fulking I had a look at a decaying cherry tree that drew my eye. I walked right up to a specimen of the nationally scarce b saproxylic beetle Oedemera femoralis, wrapped in spider's web and barely alive. Not only was this stonking species a lifer for me, it was my 750th species of beetle. We were there because Mum is down visiting for the weekend. Here she is next to the cherry tree. I suddenly thought after I had taken the photo that it might not have been the decaying tree that had attracted the beetle but rather the light on the tree. I have heard of this species turning up in moth traps, has anyone else recorded it this way?