Came to MV light
No interactions present.
The cross line before (i.e. head-side of)the oval mark extends all the way across the wing from the leading edge to the trailing edge. This is the key diagnostic feature to distinguish Marbled Beauty from Marbled Green.
Thank you Jon. I will try to remember this
Lat/Lng: 51.4385208, -3.1735053
OS grid ref: ST185717