Dear Bugman,
I found this Caterpillar in some vine on my fence in the backyard. I live in central Illinois. Can you help me figure out what kind it is? Can I possibly watch it change? Thanks!
Blaire

Hi Blaire,
The vine must be a climbing milkweed since this is the larva America’s (if not the world’s) most beloved butterfly, a Monarch Buttefly Caterpillar.

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