LOL, I just re-read Cherokeealex's post again ... slower this time. I have such a bad habit of reading too fast ... anyhow, I see her plant is having the flower buds eaten not the leaves (which the caterpillars would devour) ... wonder if it's army worms or some other sort of worms that eat the buds at night?
This talks about the Passion Vine Bugs that eat the flowers and fruit:
http://prsvkm.tripod.com/Docs/...