Bucculatrix cordiaella is a moth in the Bucculatricidae family. It is found on Galapagos Islands (Floreana, Genovesa, Isabela, Santa Cruz, Santiago and Seymour Norte). The length of the forewings is 1.83-2.17 mm. The forewings are white with a pattern of brown and brown-tipped scales. The hindwings are pale greyish brown. Adults have been recorded on wing in January, March and April. The larvae feed on Cordia lutea. They mine the leaves of their host plant. Mines have the form of a serpentine mine.