Something attacking my crepe myrtles
I have uploaded pictures here: http://picasaweb.google.com/hindesite/BugsOnCrepes
These small white spots are on two of my healthiest crepe myrtles. When I mess with them, nothing seems alive, and under the white it is some redish substance. What ever it is (scales?), I suspect it is sucking the sap. I have already applied a natural oil type killer. It warned about the plants being well hydrated and about the temperature at application, and stuff about reacting with sulphur - all that is good.
You will also notice some lighter colored areas about the size of 1/2 dollars on the trunks - related? The other crepe has that too.