The vestiture is woolly, and in this lies a distinguishing character from the Argotini and Hadenini, which some genera much resemble, while the body is hardly tufted; the rather broad throax has sometimes a median ridge. The colours of the moths are often shades of brown, red and yellow, like the autumn foliage, in which many of the hibernating species hide. The eyes of the first genera are hairy; in several the tibiæ are spinose, the reverse being usually the case.