Pararctia yarrowii, Yarrow's tiger moth, is a moth of the family Erebidae. It was described by Stretch in 1874. It is found from Hudson Bay to British Columbia and northern Arizona. The habitat consists of barren rocky fellfields and slides above the timberline. These moths are found in the Pacific Northwest. The length of the forewings is about 22 mm. The ground color of the forewings is cream to light yellow, with a pattern of broad dark brownish grey transverse lines. The hindwings are orange marked with dark grey. Adults are on wing from mid-July to mid-August.