I have been seeing small numbers of these scale insects on young trees and shrubs this past week (oak, hickory, maple and apple, plus a few wandering aimlessly on my porch without an obvious host plant). They are highly mobile and much more active than I am used to seeing in scale insects. The scale itself is very soft, looks like a large brownish-white speck of dust, and bits of it come off easily in my fingers. When I flip the insect over, it looks more like a mealybug than a typical scale insect and it is surprisingly easy to remove the scale almost entirely. I have never encountered anything quite like it before; any suggestions for an ID would be much appreciated. Thanks!