and confirmation—Pearleaf blister
Pearleaf blister mites are very small -- only about 0.2
mm long, so you need at least a 14X lens to see them. Mites
are rarely seen because they burrow beneath the surface of
the fruit or leaf to feed. This feeding causes a blister
to form; the presence of leaf blisters signals an infestation.
Don't confuse blister mites with spider
mites, which are rounder and larger, usually have two spots,
and often produce webbing. Predatory
mites are clear and move rapidly.
Inspect with a hand lens for mites