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IPM Scouting in Stone Fruits

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European red mite - Panonychus ulmi (Koch)
IPM scouting in stone fruits > mites > European red mite
European red mite (ERM) eggs begin hatching at tight cluster stage of bud development and are found on leaves or bark the rest of the year.

Monitoring and thresholds: see twospotted spider mite information.
ERM overwinter as eggs on rough bark
Female ERM
 Adult male ERM
ERM overwinter as eggs on rough bark. The eggs are most commonly found near buds, fruit spurs, and in the fork of two branches. The female ERM is red or brownish-red with conspicuous white spots at the bases of their white bristles. The adult male is smaller than the female, has a tapered abdomen, and is reddish-yellow.
 
Immature ERM feeding Immature ERM often feed in groups within unfolding leaves.
Additional information
This information was developed from A Pocket Guide for IPM Scouting in Stone Fruits by David Epstein, Larry J. Gut, Alan L. Jones and Kimberly Maxson-Stein. Purchase this in a pocket-sized guide for reference in the orchard from MSU Extension (publication E-2840).
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 Michigan Agricultural Experiment Station, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.
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Updated 7/24/07