Madrone Leafminer
Marmara arbutiella
2 host plants
Last updated
Data Coverage 1 of 6 dimensions
You will observe thin, winding serpentine trails on Pacific madrone leaves created by moth larvae tunneling within the leaf tissue. Damage appears unsightly on individual leaves but does not impact long-term tree health. Multiple leafminer species attack madrone, producing these characteristic blotch and linear mines. Damage is most evident in midsummer as miners mature.
No treatment is necessary for cosmetic leaf damage. Trees tolerate mining without health decline. If appearance is a concern, remove heavily infested leaves by hand during peak season. Madrone leafminer is a natural part of the ecosystem. Conserve parasitic wasps by avoiding insecticide applications.
Quick Reference
Order
Lepidoptera
Type
leafminer
Host Plants
2
Cultural Controls
- Natural predators may help control populations.
- Encourage predators such as green lacewings and spiders.