I have 3 Echium Pininana growing in my allotment. Recently I noticed that one of them was absolutely covered in green bugs which were hardly noticeable at first as they were the exact colour of the leaves. They were the size of a ladybird with a very small black head and pink underbelly. I got rid of them all and they haven't returned. I have never seen them before and have no idea what they were as I am only used to slugs and snails so far. They only damaged the leaves by leaving a small pinprick hole. They could be familiar to many of you but I would love to know what they were. Any answers please?