Montanamike1 I did some checking in the bug book, see if this fits the description. Mites, Gall. Adults; nearly invisible, elongate,cylindrical, pale yellow or tan mites with two pairs of legs at the front end. Mites burrow from undersides into leaf tissue of pears,currants and many ORNAMENTALS. Leaves react by forming raised blisters, puckers, or galls along the leaf margins. Some blisters,especially on maples,are bright red,others are yellow or brown. Life cycle; Numerous overlapping generations all season. Mites overwinter in crevices in bark, crawling onto new growth in the spring. Hope this is of some help, the closest thing I could find.