Chocolate-tip Clostera curtula
Wingspan 27-35 mm.
Having a disjointed distribution, this moth can be found in the southern half of England and Wales, but elsewhere only in parts of Scotland.
The English population has two generations, with adults at large in April and May, and again in August and September. In Scotland the species is single-brooded, flying from June to July.
Inhabiting woodland areas, the larvae feed on poplar (Populus), especially aspen (P. tremula) as well as sallow (Salix).