We recently experienced the emergence of the 17-year cicadas.  They have left us now but will come again in 17 years.  Their egg-laying has affected the trees, leaving orange or brown leaves.  But the trees (at least the mature ones) will not be permanently damaged.  The annual cicadas have now returned, but not in such numbers and without the intense humming.  They will not affect the trees.  Handel’s aria “Ombra mia fu” celebrates a beautiful tree.