Oak Ribbed Casemaker
Bucculatrix albertiella
50 host plants
Last updated
You will find small caterpillars creating distinctive ribbed cases from leaf fragments and silk on the undersides of oak leaves. Each larva constructs a portable case roughly one-quarter inch long with lengthwise ribbing. Cases are light tan to brown. Larvae graze on leaf tissue adjacent to their cases, creating window-like feeding patterns. Multiple generations occur throughout the growing season on host oaks.
Damage is generally light and cosmetic on most oaks. No control is needed for tree health. Hand-prune heavily infested leaves if appearance is objectionable. Encourage parasitic wasps and predatory insects by avoiding broad-spectrum applications. Leaf drop is natural and does not require intervention. Most oaks tolerate casemaker populations without visible impact on growth or vigor.
Quick Reference
Cultural Controls
- Natural enemies probably help keep populations in check.
- Avoid use of broad-spectrum insecticides which kill beneficial insects.