Unknown Swallowtail Butterfly Caterpillar from Guatemala is identified

What kind of animal is this?
I would like to know if you people know what kind of animal this is. Country: Guatemala. Region: Petén. City: Tikal. Size: 6-7 centimers. We touched the animal with a wooden stick and then it made some attack move or something. His tongue came out like some sort of snake. The movie were it can be seen is over here: http://jasperstevens.nl/mexico/beest.mov Thanks in advance,
Jasper Stevens
The Netherlands

hi Jasper,
This is some species of Swallowtail Butterfly Caterpillar, probably in the genus Papilio. The tongue you describe is a scent gland known as an osmetrium. We will try to identify the species of this pretty caterpillar.

Caterpillar Identifications
Thu, Dec 18, 2008 at 8:57 PM
Hello again, Daniel.
a few other IDs and correction.
Yes, this wandering prepupa (compare its faded coloration to this caterpillar still feeding on an avocado leaf: http://www.flickr.com/photos/missingchandra/76362584/ ) will soon metamorphose into one of the 11 or so butterflies in the ” Pyrrhosticta ” group of Papilio swallowtails — P. cleotas ,P. garamas ,P. victorinus , etc.
I hope the above information is helpful.
Best wishes,
Keith Wolfe
aka “EarlyStages”

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