Myrica gale
The larvae feed on "Myrica gale", "Ribes uva-crispa", "Sorbus aucuparia", "Amelanchier confusa", "Calluna", "Vaccinium" species (including "Vaccinium myrtillus" and "Vaccinium uliginosum"), "Andromeda polifolia", "Ledum palustre" and "Pedicularis palustris".