This is a White-Lined Sphinx Moth caterpillar and its final metamorphasis into the White-Lined Sphinx moth. This moth is also known as a Hummingbird Moth because it can easily be mistaken for one. Yes, the caterpillar can be considered a pest by some gardeners. However, the extraordinarily beautiful moth is one of our nighttime pollinators. If you see them in your garden, be kind and thank them for the invaluable work they do in our garden.
Photo Credit: Caterpillar by Rosie C; moth from Flickr stock images