Common in broad-leaved woodland, scrubby downland, heathland and moorland throughout much of the British Isles, a species of conservation concern under the UK Biodiversity Action Plan. In Hampshire and on the Isle of Wight present in all three vice-counties, but usually at low density and mainly in deciduous woodland. Wingspan 35-45 mm. Larva feeds on Sessile Oak, Pedunculate Oak, Wych Elm, English Elm, Silver Birch, Downy Birch, Eared Willow, Goat Willow, Grey Willow, broad-leaved trees, Heather and Bilberry, over-wintering as an egg.

Flightime guide
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