Lost in space

I noticed one of the plants in the garden had become covered in what I thought were spider's webs. Tonight inbetween rain showers I snook a peek and each web pocket has dozens of caterpillars in....rolling over each other like something out of Alien ...yikes. As I moved a leaf this little fella made a run for it.....if you go LARGE you will see him in more detail as he really was tiny. As soon as the weather fines up I will blip one of the nests....