This really is the pupa. I know because we raised it and in a few days will show you the moth.
May be a repeat
Blinded Sphinx - Hodges#7824 (Paonias excaecata)
ALABAMA: Tuscaloosa Co.
Tulip Tree Hollow off Echola Rd.; Elrod
J.C. Abbott #2816 & K.K. Abbott
Caught at a black light trap at a shale barren.
The Blinded Sphinx (Paonias excaecatus) is a moth of the family Sphingidae. It is found in Nova Scotia, New Brunswick and Prince Edward Island, and across the rest of Canada all the way to British Columbia. In the United States it ranges south to Florida in the east, and westward to eastern California and as far south as central Texas.