Spilosoma vestalis, the vestal tiger-moth, is a moth in the family Erebidae. It was described by Packard in 1864. It is found along the coast of western North America, from California north to the Kitsap Peninsula in Washington and western Idaho. The habitat consists of wet forests, moist forests, coastal rainforests, low elevation mixed hardwood forests and high elevation mixed conifer forests. The length of the forewings is 19–26 mm. The wings are pure white, marked with a few black dots. Adults are on wing from May to June.