Name: greene Savannah, GA (Sunset 28) (Zone 8b) I have no use for internet bullies!
Yes, the eggs are on a Bidens, either pilosa or alba. They are very low on the plant in a shaded area which is usually dry.
I checked again today; no change.
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"