ADULT: Wingspan 38-44mm.   The forewings are sporadically covered with various sized crescent shaped markings.  The hindwings of this moth are white.  LARVA: A soft pale green and covered with many long white or yellowish hairs giving a feathery appearance.  It feeds on a variety of trees including Beech, Hazel, Oak, Birch and Willow.  BEHAVIOUR: Attracted to light and sugar but usually in singles or small numbers.   HABITAT: Mainly woodland, heathland and gardens.  FLIGHT PERIOD: Single brooded.  June to August.  STATUS: Resident and more common in the south.