Wingspan 24-28 mm.
A common species throughout Britain, displaying a wide range of differing depths of colour, although all forms have the distinctive whitish ground colour.
The adults fly from May into July, and it can often be disturbed during the day from low vegetation in woodlands, clearings and similar habitats. However its main flight time is at night when it is a regular visitor to the light trap.
Low plants, such as bedstraw (Galium) are the foodplants in the larval stage.