This list of the butterflies of northern Spain's Picos de Europa and immediate environs is
compiled from more than 20 published and unpublished sources, as well as from field observations
by Teresa Farino since 1985. Nomenclature, taxonomic order and English names follow Lafranchis,
T. (2004) Butterflies of Europe: new field guide and key. Diatheo, Paris. Taxa in [square brackets]
are not identified in Lafranchis. Spanish vernacular names follow Tolman, T. & Lewington, R. (2002)
Guía de las Mariposas de España y Europa. Lynx Edicions, Barcelona.