Galagete gnathodoxa is a moth in the Autostichidae family. It was described by Meyrick in 1926. It is found on the Galapagos Islands. The wingspan is 9.5-12 mm for males and 10-11.5 mm for females. The forewings are dark brown with white markings. The hindwings are pale greyish brown. Adults have been recorded on wing in January, March, April, May, June, July and October.