How to Manage Pests

Pests in Gardens and Landscapes

Grape erineum mite—Colomerus vitis

Adult mites are wormlike, light yellowish white, 0.2 mm long and one-fourth as wide. They have two pairs of legs and are much smaller than spider mites.

Life cycle


Young leaves show bright pinkish or reddish swellings on upper surfaces. Corresponding areas on lower surfaces are concave and densely lined with a felty mass of plant hairs.


Control is not necessary. Early leaf distortion can be tolerated with no resulting loss in yield.

Grape erineum mites
Grape erineum mites

Erineum mite damage
Erineum mite damage

Statewide IPM Program, Agriculture and Natural Resources, University of California
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