Species account from Moths of Glamorgan
(Gilmore, Slade & Stewart, 2009):

One of the commonest spring species encountered at light or willow blossom often in very good numbers. Found in almost every habitat, but appearing most common in and around woodlands where the larvae feed on a wide range of deciduous trees, particularly oak and willow. Typically appears in mid-February and is last seen early June, with the main flight period occurring during April. There are also exceptionally early and late records for December and July respectively.