My father in law just sent in these pictures of a chrysalis/cocoon, which is just amazing looking. But I have no idea what caterpillar this is.
I have never come across or read about a butterfly/moth caterpillar that builds a cocoon within a weave mesh. The resulting cocoon looks like it floating in the middle. Also, if you notice, the caterpillar has shed its skin before entering the cocoon.
I do hope someone can ID this. it's just amazing to look at and it'd be brilliant to put a name to it.