Who is eating shrub leaves?

I have several vine maples, native to parts of BC - some are fine and others have all the holes in leaves

I also photographed a young native dogwood

and the rootstock of an ornamental flower cherry

I don’t see an insect or any cobwebs or sticky residue

what’s eating the fresh young leaves?

photos attached

 

Try looking for them at night to see if that makes a difference.

 

Thank you @Ron B

I notice small white foam spots on adjacent shrubs of similar species as described (photo) above

the foam is maybe just slightly larger than a Q-Tip

 

Is it like spit-bug foam?

 

@Margot - i just took these photos - in my coast garden near the ocean

see the insects in the foam?

again the foam is approx size of q-tip

it’s shown on the root stock of a neighbour ornamental flower cherry (the root stock sprouts / shoots spreads easily 30 feet

and on my young vine maples ;acer circinatum)

 

@Margot The bugs in the spittle look like Aphrophora sp (permutata?) the Douglas Fir Spittlebug. There may be other insects chewing on your leaves as well.
269-aphrophora-sp-douglas-fir-spittlebug

browse_photos

 

Interesting - yes there are several large old Doug firs and western cedars nearby

wjatever it is had destroyed a young Acer circinatum

here’s old Ag Canada 1982
http://esc-sec.ca/wp/wp-content/uploads/2017/03/AAFC_insects_and_arachnids_part_10.pdf