The brown-tail (Euproctis chrysorrhoea) is a moth of the family Lymantriidae. It is distributed throughout Europe. The wings of this species are pure white, as is the body, apart from a tuft of brown hairs at the end of the abdomen. The brown coloration extends along most of the back of the abdomen in the male. In the female, the back of the abdomen is white, but the tuft of brown hairs is much bigger. The wingspan is 36-42 mm.