Pear leaf blister mite

Pear leaf blister mite, Eriophyes (=Phytoptus) pyri , is an eriophyid mite found on pear, Pyrus, species.

Links

UC IPM Online: Pearleaf blister mite
This is a good site for biology and images and management ideas although it is geared to fruit production rather than nursery stock.

Michigan State University Extension Pear Leaf Blister Mite

Pear leaf blister damage

Photo: Melodie Putnam

Pear leaf blister mite damge

Photo: Melodie Putnam

Pear leaf blister mite on 'Trinity" pear early damage

Photo: Anonymous

Pear leaf blister mites feeding

Photo: Jim Young