Caterpillar rescue!

I can only guess these minuscular caterpillars are the offspring of the rescued lesser broad bordered yellow underwing that I rescued a few days ago from almost the same location.  

There were a few of patches of them - and from a distance, they looked like a mottled moth.  Following another rescue mission, this time with step ladders, they're safely in the hedge - or at least more in safety than next to the light-weight spider that lives in the corner of the room.