Juergen Freund / Timelapse of a Cairns birdwing (Ornithoptera euphorion) butterfly caterpillar metamorphosing into a chrysalis, Queensland, Australia, April.

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

Ingo Arndt / Pupa of Madagascar moon moth (Argema mittrei) Madagascar (Captive)

Ingo Arndt / Pupa of Common sargeant butterfly (Athyma perius)

Jan Hamrsky / Black fly pupae (Simuliidae) attached to the stem of aquatic plant, Europe, August, controlled conditions

Martin Dohrn / Driver ant / Siafu (Dorylus sp.) in nomadic stage carrying pupae

Ross Hoddinott / 2020VISION / Emperor dragonfly {Anax imperator} chrysalis shell by water's edge, Denmark Farm, Wales, UK. June

Alex Hyde / Peacock Butterfly {Inachis io} emerging from chrysalis against white background. Sequence 5/6.

Alex Hyde / Peacock Butterfly {Inachis io} emerging from chrysalis against white background. Sequence 4/6.

Alex Hyde / Peacock Butterfly {Inachis io} emerging from chrysalis against white background. Sequence 2/6.

Alex Hyde / Peacock Butterfly {Inachis io} emerging from chrysalis against white background. Sequence 6/6.

Alex Hyde / Peacock Butterfly {Inachis io} emerging from chrysalis against white background. Sequence 3/6.