Thanks for the information. Purchased this tree from a local store this year and didn't spray it this year. My other trees are looking pretty good. Is there anything I can do for it during the growing season to help it out? Thanks!!

Mulberry.

Wolfridgeil - I too thought it odd that the damage started primarily at the leaf tip. My suspicions right now are either the Spotted Tentiform Leafminer or the Apple Leafminer, but I'm still not sure I have a positive ID. The damaged leaves visible in the second link you provided look very similar to the leaves on my trees, although the larvae were much, much smaller than the caterpillar pictured. In an effort to rid the trees of the problem, I took the time to pinch each "tent" that had formed, with the intent of killing whatever larvae resided within. Barring a second generation of the pest, this should rid my trees of the problem for this year. Interestingly, it primarily affected only two of the six apples trees. Bradybb - If you have fruit trees that are displaying similar symptoms, be sure that small "tents" aren't forming on the leaves. If they are, I encourage you to open one up to see what you find.

That water droplets on foliage + sunlight can burn foliage due to the water droplet serving as a mechanism by which light can be focused on a particular point efficiently enough to cause temps high enough to 'burn' foliage is a horticultural myth - ain't gonna happen. It appears to be a mechanical injury of some sort - or possibly scars related to a physiological malady called oedema, which occurs when plants take up more water than they can rid themselves of via transpiration. Al