pic of hornworm with wasp eggs
After much searching for the name of the worm on my tomato plants, I was convinced that I didn't have the hornworm. What I read said that the wasp lays it's eggs inside the worm and the insects eat their way out of the worm. Well, what I found on my plants appeared to be eggs laid on the back of the worm, not inside.
Anyway, I kept searching and finally came across this pics which looks very close to the worms on my plant. I just thought I'd share. I've only seen these hornworms with eggs. I guess I have hornworms, just like the rest of you!
Here is a link that might be useful: hornworm with eggs pic