Photo © katunchik
Eupithecia irriguata, the marbled pug, is a moth of the family Geometridae. The species can be found in Europe and North Africa.
The wingspan is 18–20 mm and the moths fly from April to June, depending on the location. The larvae feed on the leaves of oak (Quercus species).
Source: Wikipedia
The primary larval foodplants are Beech (Fagus sylvatica), Pedunculate Oak (Quercus robur) and Sessile Oak (Quercus petraea).