The larvae feed on the leaves of various plants, including Luzula, Gymnadenia conopsea, Lotus corniculatus, Veronica chamaedrys, Rhinenthus alectorolophus and Orchidaceae species.
Crocus sieberi, Phyteuma sieberi, Luzula sieberi, Eucalyptus sieberi, Cheilanthes sieberi, Callistemon sieberi, Badula sieberi, and Hosta sieberiana, though these names may also have honored Friedrich Wilhelm Sieber.
Luzula wahlenbergii has a relatively wide distribution, growing across Arctic Eurasia, far-east Russia (including Transbaikal), Alaska, Greenland, Canada and the mountains of Scandinavia.
The larva is brown with dark and white lines and feeds on various grasses including Alopecurus, Dactylis, Deschampsia, Leymus and Phragmites and has also been recorded on the sedge, Carex and the rush, Luzula.