Phyllonorycter barbarella  Phyllonorycter barbarella is a moth of the family Gracillariidae. It is found from the Iberian Peninsula and southern France. The larvae feed on "Quercus faginea" and "Quercus pubescens". They mine the leaves of their host plant. They create a lower-surface tentiform mine between two side veins. The mine can run over a vein or even the midrib.