Sphingidae, Isognathus sp., unfortunately there is almost no info about the caterpillar of the at least 15 additional species besides Leachi and Caricae, which is not.
@Leonardo: Take a look at the base of the long tail. In this one and Isognathus it is completely black, whereas in Pseudosphinx tetrio the base is red:
http://en.wikipedia.org/wiki/File:Pseudosphinx_tetrio.jpg
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