Identification: A medium-size long-winged moth with grey and tan forewings and shining white hindwings. The forewing is rusty tan overlaid by scattered grey scaling. The leading third and terminal areas are darker grey. The orbicular (white) and reniform (white with tan filling) are prominent, and there are pale patches in the subterminal area near the apex and in the middle. The veins in the center of the wing have diffuse white streaking. The head and thorax are pale grey, with rich ochre along the edges of the tegulae. The hindwings are shining white, with some darker scaling on the veins near the margin.
Wing Span: 3.8-4.0 cm
Flight: mid May to mid July
Range: Extreme southeastern Alberta south to at least Arizona