Phyllonorycter hilarella 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-.The head is whitish, mixed with fuscous, face white. Antennae with apex white. Forewings are golden-ochreous; a white median streak from base to 1/3 an ill-defined white dorsal spot at 1/4; a slightly bent median fascia, three posterior costal and two dorsal spots white, anteriorly dark-margined; a black apical dot; dark line of cilia nearly obsolete. Hindwings are grey.[1]
There are two generations per year with adults on wing in late May and June and again in August.[2]
The larvae feed on Salix aurita, Salix caprea and Salix cinerea. They mine the leaves of their host plant.[3]