Pete Oxford / Monkey-slug caterpillar {Phobetron sp} mimics tarantula spider. Rainforest, Madre de Dios, Peru

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

Alex Hyde / Moth (Phobetron hipparchia) showing bird dropping mimicry, Cordillera de Talamanca mountain range, Caribbean Slopes, Costa Rica

Alex Hyde / Moth (Phobetron hipparchia) showing bird dropping mimicry, Cordillera de Talamanca mountain range, Caribbean Slopes, Costa Rica

Piotr Naskrecki / Cup Moth (Phobetron sp) caterpillar, Suriname

Claudio Contreras / Caterpillar larva of the Hag moth (Phobetron sp) Montes Azules Biosphere Reserve, Lacandon Rainforest, Mexico, August

David Weiller / Close up shot of Monkey slug (Phobetron hipparchia) caterpillar moving slowly along a stick, Amazon rainforest, Puyo, Ecuador.

David Weiller / Close up shot of a Monkey slug (Phobetron hipparchia) caterpillar moving over a leaf, Amazon rainforest, Puyo, Ecuador.