Big Poplar Sphinx

Very Large Grey / Brown Moth
Wed, May 6, 2009 at 8:29 PM
I found this Moth flying outside my sliding glass window tonight. I had just gotten home at 9 pm and turned on the porch light and noticed this thing was trying to get in. I thought it was a small bird at the beginning but then saw it was a moth of some sort. It is in the mid 70’s right now and moist outside. I did spray fir bugs today outside the perimeter of my home. Please help, I hate bugs.
I would say this thing is a good 2.5 inches in length . Scarey.
Thanks Wendy
Santa Clarita, Ca

Big Poplar Sphinx
Big Poplar Sphinx

Hi Wendy,
How lucky you are to have seen a Big Poplar Sphinx, Pachysphinx occidentalis occidentalis, which is found in western North America from Canada to Baja California.  It truly is a magnificent moth.  You can read more about it on Bill Oehlke’s excellent website.

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BugMan aka Daniel Marlos has been identifying bugs since 1999. is his passion project and it has helped millions of readers identify the bug that has been bugging them for over two decades. You can reach out to him through our Contact Page.

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