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Grape erineum mite

Colomerus vitis (Pagenstecher)
Eriophyidae: Acari

This very small mite cannot be seen without magnification. It overwinters under the bark of 1-year-old canes.


In spring, the mites move to leaves, causing raised bumps, called an “erineum,” on the upper surface. This has densely curled leaf hairs on the lower surface, in which the mites feed and reproduce.

Pest and Beneficials Search (search again)

The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the AgBioResearch, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.