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Largest caterpillar in the world?

Does anyone know what the largest cat in the world might be?

still researching; some samples
Hickory horned devil is the biggest in North America, 12 cm, and actually the biggest confirmed measurement I've found for any caterpillar in the world. The NCYU museum in Taiwan has a press release about a butterfly exhibit with world's largest caterpillar, but it doesn't give the species name or its size.

The caterpillars of the largest adult lepidoptera are pretty big, but not bigger than the hickory horned devil: that of the world's largest moth (Attacus atlas) is 11.5 cm, and of the world's largest butterfly (Ornithoptera alexandrae) is 11 cm.

 
Yeah I saw the NCYU post, tha
Yeah I saw the NCYU post, that was frustrating. I thought the hickory horned devil might be the largest, I love regal moths. Thanks for the info about A. atlas and O. alexandrae, those are some very cool lepidopterans.

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