Palos Verdes Blue (Glaucopsyche lygdamus palosverdesensis): Endemic to the Palos Verdes Peninsula in Southern California, USA, this butterfly is critically endangered due to habitat loss and urban development.
Atala Hairstreak (Eumaeus atala): Found in southern Florida and the Caribbean, the Atala hairstreak was once thought to be extinct but has been reintroduced in some areas.
Lange's Metalmark (Apodemia mormo langei): Native to California's Antioch Dunes, this butterfly is critically endangered due to habitat destruction caused by sand mining and invasive plants.
Queen Alexandra's Birdwing (Ornithoptera alexandrae): Found in Papua New Guinea, this is the largest butterfly in the world. It is endangered due to habitat loss and collection for the butterfly trade.
Schaus' Swallowtail (Papilio aristodemus): Endemic to southern Florida, USA, this butterfly is critically endangered due to habitat loss, hurricanes, and insecticides.
Poʻouli (Melamprosops phaeosoma): Endemic to the island of Maui in Hawaii, USA, the Poʻouli is a critically endangered birdwing butterfly. It is threatened by habitat loss, invasive species, and disease.
Saint Francis' Satyr (Neonympha mitchellii francisci): Found in a small area of North Carolina, USA, this butterfly is critically endangered due to habitat destruction and degradation caused by urbanization and agriculture.
Zestos Skipper (Epargyreus zestos): Endemic to a small area in southern Florida, USA, this butterfly is critically endangered due to habitat loss and fragmentation caused by urban development and agriculture