Ingo Arndt / Slug caterpillar moth larvae mimicry {Limacodidae} Comoe NP, Ivory Coast

Ingo Arndt / Slug caterpillar moth larva mimics bug {Limacodidae} Guanacaste, Costa Rica

Ingo Arndt / Cup Moth (Acharia nesea) caterpillar, Costa Rica

Ingo Arndt / Cup Moth (Limacodidae) two caterpillars on leaf

Mark Moffett / Slug Caterpillar (Setora fletcheri) shows warning coloration and spines loaded with toxins that erect when the animal is disturbed, Tam Dao National Park, Vietnam

Alex Hyde / Monkey Slug Caterpillar (Limacodidae) mimicking a spider. Lowland rainforest, Manu Biosphere Reserve, Amazonia, Peru. November.

Alex Hyde / Monkey Slug Caterpillar (Limacodidae) mimicking a spider. Photographed in mobile field studio on a white background. Manu Biosphere Reserve, Amazonia, Peru. November.

Nick Garbutt / Monkey slug caterpillar (Phobetron pithecium) on leaf. Manu Biosphere Reserve, Amazonia, Peru.

Paul Bertner / Cup Moth (Limacodidae) caterpillar, Angkor Wat, Cambodia

Paul Bertner / Cup Moth (Limacodidae) caterpillar, Antananarivo, Madagascar

Paul Bertner / Cup Moth (Limacodidae) caterpillar, Antananarivo, Madagascar

Paul Bertner / Cup Moth (Idonauton apicalis) caterpillar, Cuc Phuong National Park, Vietnam