Orlando
This is the Achemon Sphinx moth.
They are found over most of the US and Mexico.
The caterpillars can be green or reddish brown.
The larvae do feed on grape leaves, Virginia creeper, and Ampelopsis (porcelain vine) plants. The caterpillars lose their tails in the last stage before it turns into a pupa. They pupate in the soil.
The adults feed on nectar from flowers. The adults can be seen at dusk feeding...looking kind of like hummingbirds.
Here are photos of adults and caterpillars of various stages. http://bugguide.net/node/view/20061/bgimage
At the site below is a caterpillar of this moth.There is another caterpillar that was just sent in to be ID'ed of this moth from CO.
