Another First for me!
For years I have had lots of Spicebush Swallowtails. I attributed this to the large number of Sassafras trees in my yard but I had never happened upon a caterpillar until a couple of days ago. My adult trees have been pruned to a point about 8'-10' so I haven't given them anything but a cursory examination for cats. Sassafras trees produce lots of "new tree" growth from their roots and I have generally removed this new growth. I unintentionally left one last year and it is about 18" tall and wide now. I was out in the yard with my camera and noticed the "gnawed on" leaves and several possible nests. These rolled up leaves were indeed inhabited and I got my first live-view caterpillar.
My grandmother never owned a toothbrush in her life...she always had a supply of "home made" Sassafras toothbrushes. She died in her late 80's with her own teeth intact so they must have worked.
Young Sassafras Tree
Partially opened nest
Nest held open exposing caterpillar