Phyllonorycter harrisella

Description

Phyllonorycter harrisella is a moth of the family Gracillariidae. It is found in all of Europe, except the Balkan Peninsula and the Mediterranean islands. The wingspan is 7–9 mm. Adults are on wing in May and June and again in autumn. The larvae feed on Quercus cerris, Quercus cerris austriaca, Quercus dalechampii, Quercus faginea, Quercus frainetto, Quercus macranthera, Quercus petraea, Quercus pontica, Quercus pubescens and Quercus robur. They mine the leaves of their host plant. They create a small, lower-surface tentiform mine with one strong fold in the lower epidermis. The pupa is made in a tough white cocoon that is attached to both the floor and the roof of the mine.