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Photo#2174819
Sphinx moth caterpilar?

Sphinx moth caterpilar?
Menomonie, Dunn County, Wisconsin, USA
September 9, 2022
Size: > 2 inches
Found while rearing luna caterpillars on birch.

Moved
Moved from Sphinx Moths.

Twin-spotted Sphinx? (Smerinthus jamaicensis)
While visiting the Univ. of Missouri in Columbia, MO, I asked Bob Stiles if he knew what this was and he pulled out a book on sphinx immatures that had a photo that was virtually identical to this one. If confirmed this would be a first for this county, but not for Wisconsin as there was one reported one county west of here.

Moved
Moved from ID Request.

 
better ID?
Bob, Thanks for the confirmation that it's some kind of sphinx moth caterpillar, but will it get a better ID after it's moved?

 
Yes, once it's moved here, an
Yes, once it's moved here, an expert will usually ID it farther in a few days or so

 
Yes
I'm pretty sure of the genus, but I wanted to get an expert opinion. see Paonias

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