Knowledgebase
Green Caterpillar ID #924964
Asked February 23, 2026, 5:42 PM EST
St. Louis County Minnesota
Expert Response
HI Peter,
This the young caterpillar form of Abbott’s Sphinx moth. The caterpillar changes greatly in appearance before it becomes the moth. If you click on all the photos on the site below you’ll see a photo of what you saw.
https://www.butterfliesandmoths.org/species/Sphecodina-abbottii
Thanks for your question. Hope you’re well, former coworker! Spring is coming and I’ll be walking dogs by your house soon., I hope.
Sent from my iPhone
On Feb 23, 2026, at 6:46 PM, Ask Extension wrote:
You’re welcome Peter. I am well! Looking forward to gardening again, and running into you in the neighborhood.