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Photo#1009161
Is this some kind of Fritillary Caterpillar? - Anartia jatrophae

Is this some kind of Fritillary Caterpillar? - Anartia jatrophae
Okeechobee, Okeechobee County, Florida, USA
October 5, 2014

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Black Spiny Caterpillar - Anartia jatrophae Is this some kind of Fritillary Caterpillar? - Anartia jatrophae Is this some kind of Fritillary Caterpillar? - Anartia jatrophae

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Looks like a White Peacock caterpillar
Anartia jatrophae. Very few species found north of Mexico have clubbed "horns" on the head, and it is a very good clue. Coloring and location get us the rest of the way.

Fritillary caterpillars do look similar, but this one has a row of spines down the middle (Fritillaries don't), and Fritillary caterpllars do not have "horns" on the head (except the Gulf Fritillary, which is technically not a Fritillary, though it is related to them). If any true Fritillary caterpillars have what appears to be a pair of horns, they come from just behind the head.

 
Thanks for your help!
You have made my day! Not being able to ID this caterpillar has been driving me crazy! But I see now that the pic of the white peacock caterpillar in my Caterpillars of Eastern North America book is taken at such an angle that the horns on the head aren't really visible. This really is the best site :-)

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