Azalea (Rhododendron)-Oblique-banded leafroller

Choristoneura rosaceana

Pest description and damage The oblique-banded leafroller larvae roll and tie leaves together for shelter and feeding. The newly hatched larvae first mine leaves, then roll and tie the leaves together. They are often first detected by the abundant holes in leaves. The larvae are green caterpillars with a light brown to black head. When disturbed, they thrash about violently, wriggle backwards, and may drop from the leaf suspended by a silken thread. Their feeding on growing points on young plants can promote undesirable branching.

For biology, life history, monitoring and management

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Management-chemical control

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For more information

LaGasa, E., T. Murray, and C. Looney. 2011. PNW Defoliators (http://www.invasives.wsu.edu/defoliators/species_faqs.html)