Something damaging a Silver lime tree

Hi there,

Ive been helping out at a garden and we're trying to work out what's attacking the silver lime trees. I'm wondering if it might be a leaf miner. I've taken a few pictures. There are holes and white growths on the underside. Apparently they drop far earlier in the year than it should. I found this little caterpillar on one of the leaves but it doesn't really look like caterpillar damage to me although RHS website says it can be any issue with this type of tree. Any help much appreciated.

 

May not be exactly this but it is along similar lines.
Lime nail gall mite / RHS Gardening

I think you might have a couple of things going on there.

 

Ah great, that's interesting. Yes I'll keep an eye on them and see what else i can see. Very helpful, thanks

 

Its a wonder we ever have any leaves left on trees when you see what eats the leaves.
This is Tilia ones.

tilia caterpillar uk - Google Search