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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. |
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| 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. |
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Immature ERM often feed in groups within unfolding leaves. |
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Additional information
- For more monitoring information and evaluation of available pesticides:
Michigan Fruit Management Guide
- A Practical Guide to Scouting Apple Orchards – a DVD showing how to scout apple orchards.
- MSU Diagnostic Services for assistance in pest identification.
- MSU Fruit Crop Advisory Team Alert newsletters for current pest/crop conditions.
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| This information was developed from A Pocket Guide for IPM Scouting in Michigan Apples by David Epstein, Larry J. Gut and George W. Sundin. Purchase this in a pocket-sized guide for reference in the orchard from MSU Extension (publication E-2720). |
