Sthenopis purpurascens, the four-spotted ghost moth, is a species of moth of the family Hepialidae.

It is found in Canada and the United States, from Labrador and New York north and west to British Columbia and the Northwest Territories, south in the mountains to Arizona.

There are two color forms, a purple-grey and a yellow-brown form.

The hindwings are purple brown or salmon pink and generally unmarked.

This article on a moth of the family Hepialidae is a stub.