Sylvain Cordier / Monarch butterfly (Danaus plexippus) wintering in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve / Reserva de Biosfera de la Mariposa Monarca UNESCO World Heritage Site, An...

Sylvain Cordier / Monarch butterfly (Danaus plexippus), wintering from November to March in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve, Mexico.

James Dunbar / Timelapse of a Tiger longwing (Heliconius hecale) forming a chrysalis. Controlled conditions. Native to South and Central America.

Floris van Breugel / Monarch butterflies (Danaus plexippus) over winter on Eucalyptus and Monterey Cypress trees near Pismo Beach, San Luis, California, USA December.. When temperatures warm up enough, they will embark on...

Paul D Stewart / Illustration of 'The Entomologist'. Rare copper print with original hand colouring, drawn by George Spratt, printed by George Madely, and sold individually as part of a series through Charles Tilt's F...

Stephen Dalton / Tiger mimic queen butterfly (Lycorea halia) in flight Venezuela, South America

Doug Wechsler / Tiger swallowtail butterfly {Papilio glaucus} female resting on trumpetweed. USA.

Pete Oxford / Tiger butterfly {Tithorea harmonia} resting. Amazon, Ecuador. Captive.

Pete Oxford / Tiger butterfly {Tithorea harmonia} chrysalids on leaf stem. Amazon, Ecuador

Pete Oxford / Tiger butterfly pupa {Tithorea harmonia} Amazonia, Ecuador

Michael & Patricia Fogden / Tiger Longwing (Heliconius hecale) butterfly at Lantana flowers, Costa Rica

Chris Mattison / Banded orange heliconian (Dryadula phaetusa) butterfly, wings closed. Native to Tropical America, including Florida. Captive.