Cydalima perspectalis caterpillar
Franz van Duns

Although the box tree moth (Cydalima perspectalis) has not yet arrived in the U.S., the pest is not far away. The pest is native to eastern Asia, and was detected in Toronto, Canada, in 2018 and is prevalent throughout Europe.

Based on DNA evidence, box tree moths were introduced into Europe from Asia multiple times and moved within Europe via nursery trade after they were introduced. Once the moths got onto wild European boxwoods, they were able to spread relatively unchecked.

Sources: Penn State Extension, Canadian Food Inspection Agency, Horticultural Research Institute