have you been able to determine what it is? It may or may not be the same thing. Different insects feed in different ways, some chew from the outside, some in the middle, some in between the leaf tissue. Can you post some pics? Where do you live?
I bet it's leaf-cutter bees and/ or paper wasps.
They chew the heck out of most of my broadleaf plants....doesn't really
hurt the plant but sure makes them look tattered and ugly.