Identified by Vazrick Nazari "Your moth is a Gnorimoschema septentrionella Fyles, 1911. It is a gall-maker on Aster and is part of a complex of species that includes gallaesolidaginis, gallaesterella, gibsonella, salinaris etc, all of whom are closely related and variable, however this one is distinct enough for me to be able to identify with confidence. The type locality is Wakefield QC.”