Giant Silkworm Caterpillar from the Yucatan

Subject: Yucatan Caterpillar
Location: Chuburna Puerto, Yucatan, Mexico
July 9, 2013 9:38 am
July 9th, 2013, 0915 hrs. Chuburna Puerto, Yucatan, Mexico
I came across a great number of these Caterpillars crossing an asphalt road near the Chuburna Marina. They all were traveling north to south, coming from a sandy beach area and headed into a swamp/marshy area. Who are these guys.
Thank YTM
Signature: YTM

Possibly Periphoba aracaei Caterpillar

Dear YTM,
We believe this is a Giant Silkworm Caterpillar in the genus Automeris, and there are many species in Mexico.  We browsed the World’s Largest Saturniidae site and we believe this might be Automeris zozine, and we have contacted Bill Oehlke for his opinion.  Caterpillars in the genus Automeris should be handled with caution as they have stinging spines.

Giant Silkworm Caterpillar: Periphoba aracaei perhaps

Thanks, so much.  Love your site.  YTM

Bill Oehlke provides his input
Hi Daniel,
I believe it is Periphoba aracaei.
Any contact info so I can use image?
Bill

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Location: Yucatan, Mexico