Judging by the numbers, there should be gobs of butterflies, I hope. I wouldn’t have known to look for them, had I not seen the butterfly laying the egg. I was afraid they were going to strip my leaves bare, as some of my Pawpaw are not very big. That is not the case, I’m glad to say, they appear to be making a hole or 2 and leaving the leaves intact. I’ve done worse damage removing a cage from around one of them that the tree had outgrown. Time will tell if their appetite becomes more veracious as they age.
From what I read, only one can exist on a tree as they will encounter the other and devour it. I have seen them all on a single leaf and not noticed any one attacking the other. I’m impressed in the fast growth they’ve shown in only a few days.
Under the 6/15 photo, you will notice one is black and the other one grey. I do not think the grey one is the right caterpillar species. They usually don’t turn color that small and it appears to have bumps on it.