Elachista anagna is a moth of the family Elachistidae. It is found in the United States in Arizona and Colorado.Kaila, L. 1997. A revision of the Nearctic species of Elachista s. l. II. The argentella group (Lepidoptera, Elachistidae). Acta Zoologica Fennica 206: 1–93.
The length of the forewings is 4–4.9 mm.
Etymology The species name is an artificial combination of letters.
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