Michael & Patricia Fogden / Green-spotted Swallowtail (Graphium tynderaeus) butterfly, Tangkoko Batuangus Reserve, Indonesia

Barry Mansell / Tailed jay butterfly (Graphium agamemnnon) from Southeast Asia. Captive

Konrad Wothe / Small Striped Swordtail (Graphium policenes) and Nymphalid Butterfly (Nymphalidae) feeding on flower nectar, Mahale Mountains National Park, Tanzania

Konrad Wothe / Small Striped Swordtail (Graphium policenes) butterflies sipping minerals on shore, Lake Tanganyika, Mahale Mountains National Park, Tanzania

Stephen Dalton / Tailed jay butterfly (Graphium agamemnon) Malaysia

Nature Production / Caterpillar larva of Swallowtail butterfly (Graphium doson) last instar, Japan

Chien Lee / Fivebar Swordtail (Graphium antiphates) and Common Jay (Graphium doson) butterflies feeding on minerals on riverbank, Gunung Mulu National Park, Malaysia

Thomas Marent / Swallowtail Butterfly (Graphium sarpedon) feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Swallowtail Butterfly (Graphium sarpedon) feeding on minerals in sand, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Tailed Jay Butterfly (Graphium agamemnon) feeding on minerals in soil, Tanjung Puting National Park, Borneo, Indonesia

Edwin Giesbers / Tailed jay butterfly (Graphium agamemnon) at rest with wings open

Edwin Giesbers / Tailed jay butterfly (Graphium agamemnon) close-up of wing scales

Hiroya Minakuchi / Tailed Jay Butterfly (Graphium agamemnon), Philippines

Adrian Davies / Tailed jay butterfly (Graphium agamemnon) at rest on leaf, USA

Tim Laman / Group of Swallowtail butterflies (Graphium sp) on beach. Bioko Island, Equatorial Guinea.

Steven David Miller / Blue triangle butterfly (Graphium sarpedon) on leaves, Melbourne zoo, Australia, captive

Tom Vezo / Tailed Jay Butterfly (Graphium agamemnon), Tucson Botanical Gardens, Tucson, Arizona