In strawberry patch on swamp milkweed. Because the milkweed is still quite young the larvae had walked along the retaining wall in search of more milkweed...leaving droppings along the way.
Probably two to three days old based on size.
Latitude: 45 Longitude: -93.3
The observer's e-mail address will not be disclosed.
Contact will be made through a web-based form.