Pest description and damage A very tiny (less than 0.008 inch) eriophyid mite that causes elongated, red to greenish pimple-like galls (about 0.3 inch in length) on leaves. Damage is seldom serious.
Predatory mites are important biological control agents.
See Table 3 in:
Chemical Control of Landscape Pests
For more information
See "Gallmakers" in: