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a cottonwood sphinx moth?
Greetings,
When coming back from lunch this afternoon, I happened to notice this moth on the wall just outside the building where I work in Northwest New Mexico . Is this a cottonwood sphinx? That’s what the local biologist said it was, but I cannot find any information on a “cottonwood” sphinx. The closest thing I found on the internet was the “big poplar” or the “modest” sphinx. Is the moth I found one of these? Thanks in advance, what a great site.
Nicole

Hi Nicole,
Some writers think that Pachysphinx modesta is a subspecies of Pachysphinx occidentalis, your Big Poplar Sphinx. Both species sometimes, depending upon the author, are called the Big Poplar Sphinx. Yours is the Western species. You can find it on this site.

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