Eraina thamnocephala is a species of moth in the family Oecophoridae erected by John Frederick Gates Clarke in 1978. It is found in Chile.^[1]

The wingspan is 17–21 mm. The forewings are pale cream, with the extreme edge of the basal fifth of the costa fuscous and fuscous discal spots as follows: one in the cell at the basal third, one slightly beyond in the fold, and a transverse pair at the end of the cell. The surface with or without ill-defined clay color patches and sparse fuscous irrorations (sprinkles). Around the termen, a series of 4 or 5 fuscous spots is found, which are sometimes confluent. The hindwings are ocherous white with the surface, especially toward the margins sprinkled with grayish-fuscous scales and the outer edge narrow grayish fuscous.^[2]

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