At first glance, this moth looks exactly like the Mexican Tiger moth, Grammia proxima, however this closely related species has its differences. The males of this species also have red hindwings with black spots, like the females. The pictures on this page come from caterpillars found mid-March in Southeastern Arizona. They are quite noticeable when they cross the road. They likely were hibernating through the winter and have reawakened to seek food and then transform into moths. The captured caterpillars were fed salad greens. The adults were later released, but not before two females had released about 200 eggs in total. Hatchlings from these eggs were then observed. The males are active flyers while the big, heavy females had a difficult time flying.

ID: possible Grammia geneura or G. nevadensis (or even G. nevadensis geneura) [http://bugguide.net/node/view/131677].