https://en.wikipedia.org/wiki/Eriocraniidae These small, metallic moths are usually day-flying, emerging fairly early in the northern temperate Spring. They have a proboscis with which they drink water or sap. The larvae are leaf-miners mainly on the birch (Betula) and oak (Quercus) but a few on Salicales and Rosales.
Suborder: Glossata Infraorder: Dacnonypha Superfamily: Eriocranioidea