Gazoryctra fuscoargenteus is a moth of the family Hepialidae. It is found from northern Scandinavia to Siberia and the Kamchatka Peninsula.
The wingspan is 37âÂÂ42 mm for males and 39âÂÂ50 mm for females. Adults are on wing from the end of July to the beginning of August.
The larvae feed on Betula nana.