Prepona laertes, the shaded-blue leafwing or Laertes prepona, is a butterfly of the family Nymphalidae. It is found in large parts of Central and South America.

The wingspan is about 88 mm. It is a very variable species and a great number of subspecies and forms have been described. Most of these are now considered synonyms.

The larvae feed on Inga vera, Inga ruiziana and Andira inermis.

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