What's That Bug? does not endorse extermination

Bright yellow with spines
Hi!
I was standing next to my rose bush and I thought my Blue Girl should not have yellow flowers. So when I looked a little closer I found this creature. It was attached to the rose leaf like a slug but it was colored very beautiful. Any idea what this is or what it will be? I live in Alpena, Arkansas. It is in the Northwest part of the state.
Thanks,
Angie

Hi Angie,
We were sure this was a Slug Caterpillar, but not sure of the species. That is why we wrote back for your location. Then a web search led ut to a University of Arkansas site that identified your Stinging Rose Caterpillar, Parasa indetermina. The site we mentioned has images of the adult moth as well. The caterpillar on that site has a red background color your specimen lacks. The yellow version is more common.

What's That Bug? does not endorse extermination

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