Siam,

Looks like a Tersa sphinx moth. The caterpillars can be green, gray, brown. Mine devour the pentas and firebush. It's a pretty cool moth and the "eye spots" on the cat are so detailed.

Here's a link to a post of mine from last year that shows the various colors:

Tersa Sphinx Moth post from 2015

Rhonda

I would agree - it's probably the Caribbean equivalent of our tersa sphinx moth. All sphinx moths go underground to make their pupa.

Sherry