ID pointers: A large and long-winged grey moth. Ground colour an attractive pale silver-grey dusted and marbled with darker grey. An S-curved band of pale blocks of grey across outer wind edge is obvious. The oval is pale and isolated. There is a long and branch-like basal streak and a wavy cross-line inwards from outer edge bordered with black chevrons. Sometimes the markings can be brownish in tonal colour, rather than dark greyish.