unknown caterpillar

This may be off-topic - but I found no better place to post it.
Some two months ago, I was in Guatemala, near to the border with Honduras, and took photographs of a very large and spiny caterpillar. I have put the pictures on my Website:
It must have been about four inches long. Our local guide said it might be poisonous, and, from the look of it, the spines certainly did look impressive. I do not know much about tropical insects, but I can't help wondering what kind of butterfly or moth the caterpillar may have become by now. It must be well-known, since I found pictures of it on the Web, but always without the name or other info.
Does anyone know the name of this insect?
Thanks in advance, Roger Van Loon.
There's more than money to be looked for in this short life of ours

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.