Cydalima perspectalis

What is it?

The box tree moth is a potentially serious pest of ornamental boxwood (Buxus spp.). The caterpillars cause widespread damage by feeding on the leaves and defoliating or killing host plants.

How will it impact Oregon?

Buxus species aren’t native to Oregon, but introduced box tree moths would impact ornamental boxwood species that are popular in our gardens, parks and other urban landscapes.

What does it look like?

Where is it?

Box tree moths have not yet been detected in the U.S., but they were discovered in neighboring Ontario, Canada in 2018.

Where did it come from?

The box tree moth is native to East Asia. It was accidentally introduced to Germany in 2007 and has since invaded most of Europe.

What should you do?

Early detection and reporting is our best defense. Report a suspected box tree moth sighting to the OSU Plant Clinic. The OSU Insect ID Clinic also provides free insect identification.

OSU Plant Clinic
Department of Botany & Plant Pathology