Robert Thompson / Saturniid moth (Citheronia laocoon) caterpillar, Mato Grosso, Brazil

Robert Thompson / Regal moth (Citheronia regalis) resting, Maryland, USA. May.

Robert Thompson / Regal moth (Citheronia regalis) resting, Maryland, USA. May.

Robert Thompson / Horned devil silkmoth (Citheronia beledonon) fourth instar caterpillar, near Guerrero, Mexico. September.

Pete Oxford / Saturniid Moth (Citheronia sp) caterpillar, Yasuni National Park, Amazon Rainforest, Ecuador

Robert Thompson / Hickory horned devil moth (Citheronia regalis) male resting on tree trunk, Eastern USA, June

Robert Thompson / Caterpillar larva of saturnid moth {Citheronia guayaquila} feeding on leaf, Peru

Doug Wechsler / Hickory horned devil / Royal walnut moth pupa {Citheronia regalis} Pennsylvania, USA - chrysalis

Rupert Barrington / Eggs of Hickory horned devil moth {Citheronia regalis} Florida, USA

Robert Thompson / Regal moth (Citheronia regalis) resting on leaf with black background.