140440 Red Underwing Catocala nupta Wingspan 65-75mm. A large moth that rests with its wings spread flat. The forewing colours and markings are a good match for weathered timber; at rest they conceal the colourful hindwings, but these are revealed as a shock tactic if the moth is alarmed. Adult has grey and brown forewings and black-barred red underwings. Flies August–September. Larva feeds on willows and poplars. Widespread and fairly common only in southern and central England.