Please help us identify the problem with our redbud trees! We planted some redbud saplings in the back of our yard two years ago. They have been attacked by deer, rabbits, and now some sort of insect and/or disease. If you zoom in on the first two photos, you can see two different insects. The first is some sort of black insect, and the second is some small green insects. Are these the culprits? thank you for the help!