I was picking the tomatoes one day and saw this odd looking caterpillar. I hate worms and can't stand them but I picked the tomato vine anyway so I can show it to my kids. My husband researched it on the internet to see what are the white thing on it's back. As it turned, they are wasp eggs. This kind of caterpillar is called tomato Hornworm. To better understand, there is a video below that you can watch.