Small Blood-vein Scopula imitaria
Wingspan 26-29 mm.
Like the rather similar Blood-vein (Timandra griseata), this species has a cross-line which extends across all four wings when at rest, though the colour is generally less pink.
Feeding on privet (Ligustrum) and a variety of low-growing plants, the caterpillars overwinter.
The adults fly at night during July and August and occupy habitats such as waste ground, hedgerows and coastal sand-dunes.
It is fairly common in the southern half of Britain, but local further north.