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Status: Vagrant/Accidental
Notes:
Rare immigrant from southern Europe, appearing in southern England at Shoreham, Sussex in September 1876, Corfe Castle, Dorset in September 1892, Dedham, Essex in 1892, Hoddesdon, Hertfordshire in September 1927, Portland, Dorset in September 1993, West Sussex in August 2002, Kent in August 2008, and at Totland on the Isle of Wight on 21 August 2009. Not recorded from Hampshire to date. Wingspan 65-80 mm. The main confusion species are the very much more common Red Underwing C. nupta, which has the forewing more mottled and fasciae less deeply dentate, hindwing with dark marginal band somewhat narrower and its distal edge more irregular, and Dark Crimson Underwing C. sponsa, which has the forewing darker with reniform stigma large and pale (MBGBI Vol 10). Larva feeds on Grey Willow, Crack Willow, Black Poplar and White Poplar, no evidence of breeding in the UK.
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