Marbled Beauty.
(Cryphia domestica)

Against its normal resting place of a stone wall this moth is almost invisible.

Information:
Fore-wing length: 12-14mm. They can be mistaken for Marbled Green moths but the major difference is the first cross-line which in the Marbled Green is interrupted but in the Marbled Beauty continues to form an unbroken zig-zag across both fore-wings. The shades-of-grey marbling can vary to grey-green, dull orange or green/white.
They like to rest on old stone walls and lichen covered trees where their camouflage conceals them very well. They can be seen flying near old stone buildings, stone-walled gardens and old orchards in most parts of the country during July-August.