Photo © Andy Mitchell
Polyploca ridens, the frosted green, is a moth of the family Drepanidae. It is found in southern and central Europe, England, Denmark, southern Sweden and in the east up to Russia.
The wingspan is 30–35 mm. The moth flies from April to May depending on the location.
The larvae feed on oaks.
Source: Wikipedia
The primary larval foodplants are Pedunculate Oak (Quercus robur) and Sessile Oak (Quercus petraea).