Science Fair Project Encyclopedia
The forewings are typically rich orange brown, but sometimes are dark grey, with two large pale stigmata and fine streaks along the termen . The hindwings are brown or blackish. The wingspan is 32-40 mm. This moth flies at night from March to May and is attracted to light and sallow blossom.
- Chinery, Michael Collins Guide to the Insects of Britain and Western Europe 1986 (Reprinted 1991)
- Skinner, Bernard Colour Identification Guide to Moths of the British Isles 1984
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