Blinded Sphinx
Paonias excaecata fam. Sphingidae (Hodges#7824)
Host plant(s): Found on willow (Salix sp.)
Date(s) and location(s): 17 September, 2025 – Creve Coeur Lake Park, St. Louis County; 18-September, 2025 – Council Bluff Lake, Iron County, MO
Notes: I collected one of these to rear that has now pupated. Hopefully I will find a fantastic adult in the spring.
A Thousand Acres of Silphiums 
Nice one, Bill. DO all sphinx caterpillars have that hooked structure (tail horn) near the rear?