That looks looks more like lacewing larvae to me. It is likely preying on the pests causing damage, since it is a carnivore and only eats other insects - mainly aphids. Those chewed edges on the leaves suggest leaf notcher insects or caterpillars. The lacy looking damage might be from newly hatched caterpillars.

Here is some info from the university of FL:

http://edis.ifas.ufl.edu/st576

From the linked page:

"Some of its pests are scales, caterpillars, borers, and aphids. The willow is a favored host for the gypsy moth."

Thank you. After seeing your posts, I knew that what I was seeing must have been a larvae. With a little more searching, I came across this:

http://entoweb.okstate.edu/ddd/insects/leafbeetle.htm

I'm pretty positive, those are on my tree!

i wonder why stock you bought last WEEK ... is already bug infested ...

im not sure i would go slathering remedies on a recent transplant ... its already in shock ... another shock might not be indicated ....

ken

I purchased the tree at a local nursery. I wonder if the tree had these guys on it when I purchased it. I would have noticed them if they were the size they are now, but I'm assuming that they must have been smaller.

You may be correct in that, jem07. They start out as eggs, right?

talk to your seller ... see if they are concerned .. and what they might suggest ..... if for no other reason.. just out of curiosity ...... ken