My 14 year old pinyon pine looks really bad this spring. I have never watered this tree, as it is three feet from the neighbor's nice, green lawn. I have a native grass lawn that i don't water. It has had some minor pine tip moth die back in prior years. 

This spring, all the inner needles have all browned, and even new needles are browning.  there is no tip bending, like the pine tip moth. I see no webbing, like spider mites. There are tiny black spots all over the needle surface (not inside the needles). I see no larva, worms, beetles, in the tree. Could this be scale? What can I do to save it?