Hole Puncher Pest

Despite lots of searching on the internet I was not able to identify this interesting insect. Look how it punches holes in my eggplant leaf.

Can you find the culprit? It is very well camouflaged by carrying brown material on its back. (Is this digested leaf matter? Yuck!)

I tried to pry it off the leaf with a piece of bark and it was like velcro.

Here it is - a tiny green caterpillar with a unique form of camouflage!