Eudemis profundana, common name diamond-back marble, is a moth of the family Tortricidae.
Eudemis profundana has a wingspan of 14-. Forewings are rather broad and rounded. The coloration is quite variable, ranging from dark brown to reddish, with greyish marbling and a large whitish dorsal patch. The upper edge of this patch is not deeply indented and the basal fasciae are developed also dorsally. These moths also show a raised reddish-brown mane and unusual starry eyes. They have one brood per year (univoltine). The larvae feed on Quercus and Malus species. They roll a leaf of their host and feed within. Adults are on wing from July to August.
This species can be found in most of Europe (except Iceland, Croatia and Greece). It is also found in the Near East.
Eudemis profundana lives in various habitats, mainly in the deciduous woodland, but also in gardens.