There was a caterpillar that had just changed it's skin (and in some cases just the discarded skin) under each of the bent leaves. They had nibbled half way through each of the supporting branches of the leaf, so the leaf folded over and formed a tent around them, offering some protection while they changed their skins. I thought that was quite clever!
|The caterpillar in it's leaf tent, with the discarded skin behind it|
|The main supporting structures of the leaf have been nibbled half way through, |
so it flops over to form a tent