Oak Yellow Underwing Catocala nymphagoga
(Esper, 1787)Wingspan 35-43 mm.
A very rare migrant, with only three records to date. Two were within three days of each other in July 1982, one at Tregaron, mid-Wales, and the other in the New Forest, Hampshire. More recently the third British record was trapped in the gardens of Buckingham Palace during the period 3-4 September 2002.
The species occurs in southern Europe, and flies from June to August. Apparently the species is becoming a more regular migrant in parts of continental Europe.
The larvae feed in the spring on oak (Quercus).