Gibeauxiella reliqua is a moth in the family Cosmopterigidae. It is found in France and Madagascar.Description of new Cosmopterygidae for the science from Fontainebleau forest (Lepidoptera, Cosmopterygidae, Antequerinae) at Fauna Europaea It was described from the Fontainebleau forest. The only known specimen was caught at the beginning of May on a fallen trunk of Fagus sylvatica.

The moth is about .

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