Glyphidocera ptilostoma is a moth in the Autostichidae family. It was described by Meyrick in 1935. It is found in Argentina. The wingspan is 12-13 mm. The forewings are light brownish-grey sprinkled with dark fuscous. The stigmata form small very indistinct spots of dark fuscous irroration, the plical rather obliquely before the first discal. The hindwings are grey-whitish, faintly greyer towards the apex.