ADULT: Wingspan 30-35 mm. With forewing that is greyish or rufous brown and a prominent black mark in the shape of the Hebrew letter 'nun', this is a quite an easily identified moth. The kidney mark and oval are pale and there is a series of blacks spots at the costal edge. The hindwings are grey. LARVA: Green and covered in yellowish dots and with a broad white spiracular line that has a dark upper edge. Foodplants are many including Birch, Willow, Buckthorn, Purple Loosestrife and Rosebay Willowherb. BEHAVIOUR: Can be seen feeding at Sallow blossom and is attracted to light. HABITAT: Gardens, parkland, and open woodland. FLIGHT PERIOD: March to April. STATUS: Resident. Common.
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