Rest Harrow Aplasta ononaria
Wingspan 26-31 mm.
A subtly-marked species, this moth is a member of the subfamily Geometrinae, or Emeralds, whose other British members are all greenish in colour.
It is locally distributed in coastal areas of the south and south-east of England, and also occasionally appears elsewhere as a suspected migrant.
As the English name suggests, the larval foodplant is restharrow (Ononis repens).
The adults fly mainly in June and July.