In shock!!!

I know it was warm last night and a great mothing night, but I really didn't expect this!
When i got up this morning to empty the trap there were a few wasps buzzing around  (which in itself is odd for this year) which I let out of the trap, I took the bulb out, and took the cone off and noticed another pesky wasp sitting on the top egg box.... I usually just knock the whole box into the garden at this point to get rid of the wasp, but before I did I turned the box over to check the other side, and this amazing moth was just sitting there! 
I was absolutely stunned!!! The Blue underwing (Clifden nonpareil) Catocala fraxini, is the favourite of Victorian collector's and has the huge wingspan of 75 -95mm!! and is classified as a 'rare immigrant' although it seems increasingly likley it is breeding once again in Sussex and Kent.
I am not sure if this is a migrant or home grown individual, but whichever I was delighted to catch it.
As I moved down the trap there were more delights including Dewick's plusia Macdunnoughia confusia, another rare migrant!!! 
Needless to say the trap is on again tonight