Crombrugghia tristis is a moth of the Pterophoridae family. It is found in most of Europe, except the Benelux, Great Britain, Ireland and Scandinavia. It is also known from southern Siberia, Asia Minor and central Asia. The habitat consists of sandy areas overgrown with Hieracium. The wingspan is 16–17 millimetres (0.63–0.67 in), making it the smallest species in the Crombrugghia genus. It is greyish, light-brown coloured.