new growth on my autumn blaze maple
You have not given us enough information. Age/size of tree/photos please.
Did you get the pictures I sent you?
The small amount of damage to leaves is nothing to worry about. It could have been any number of caterpillars/worms/beetles, etc. There are only a few leaves damaged. That will not affect the health of the tree. You should never treat unless you can actually see the critter and then only if it is going to cause damage to the health of your plant. Spraying just a general insecticide probably will not get the insect that caused the damage because they are gone but could affect bees and other beneficial insects.