Phyllonorycter quercifoliella is a moth of the family Gracillariidae. It is known from all of Europe, except for the Mediterranean islands.
The wingspan is 7–9 mm. The forewings are shining pale golden-ochreous ; a whitish dark-margined median streak from base to beyond middle;four costal and three dorsal shiningwhite wedge-shaped spots, dark- margined anteriorly and first costal posteriorly; a black apical dot;an indistinct dark hook in apical cilia. Hindwings are grey.The larva is ochreous-whitish ; head brown.[1]
There are two generations per year with adults on wing in April and May and again in August and September.[2]
The larvae feed on Quercus cerris, Quercus faginea, Quercus libani, Quercus petraea, Quercus robur, Quercus trojana and Quercus x turneri. They mine the leaves of their host plant.[3]