Pinion Needle Scale is highly active in our area. The pinion trees are affected every year by this insect, and it is only becoming more prominent as time passes. The bug always swarms in springtime mating and laying its white cottony egg masses all on and around pinion trees. When these eggs hatch, they crawl to the pinion needles and attach themselves covering their bodies in a hard black waxy shell. Once this happens, they begin sucking sap out of the tree through the needles stripping the tree of its needles. We have seen the scale to have multiple generations a year with our current conditions.  Power spraying with proper products is the most effective treatment available for scale.