High Quality Content by WIKIPEDIA articles! The Buff Ermine (Spilarctia luteum) is a moth of the family Arctiidae. It is sometimes placed in the genus Spilosoma. It is found throughout the temperate belt of the Palearctic region south to Northern Turkey, Georgia, Kazakhstan; also in Southern Siberia (excluding Buryatia), Eastern Mongolia, Amur Region, China, Korea and Japan.