Black Witch

Here’s a bug for you… What is it?
Any insight would be appreciated! It was rather large, saw it in Big Bend National Park. I have other pictures for comparison, but this pic along with the walking stick in the same frame should give you a good idea of how large this insect is:

Hi Stingrey,
This is a Black Witch Moth, a tropical species that flies north in summer and fall, often reaching as far as Canada. Most of the numerous images of Black Witch Moths we have received over the years have been taken on walls after the moths were attracted to lights. Your image is the first in a natural environment.

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