Morpho laertes (formerly Morpho epistrophus), the White morpho or Epistrophus white morpho, is a Neotropical butterfly found in Brazil, Uruguay, Paraguay, and Argentina. The white morpho is native to the Atlantic Forest, where they are distributed throughout a landscape of multiple species.
In 1913, Hans Fruhstorfer wrote in Die Gross-Schmetterlinge der Erde:
When first described in 1782 laertes was placed in the genus Papilio. The specimen was from Brasília. It is a valid name in The Global Lepidoptera Names Index.
Currently it is placed in the subgenus Pessonia (Le Moult & Réal 1962) of genus Morpho, along with the closely related species Morpho catenarius (Perry, 1811), Morpho luna (Butler), Morpho polyphemus (Dixey), and Morpho titei (Drury, 1770). It is now considered a junior synonym of Morpho epistrophus.
The name comes from Laërtes, a figure in Greek mythology. Epistrophus is a character in the Iliad.
Subspecies in alphabetical order: