Since their spread throughout Europe as early as 1995, and subsequently China, E. americanus has been called an “upcoming pest”. Frass left on the leaf surface as well as eggs laid in plant tissues are serious threats to the economic value of many ornamental and crop plants. This species is signigicant as it is polyphagous and feed extensively on foliage of both crops and ornamental plants, causing millions of USD in crop loss annually.
Image used under the Creative Commons Attribution 3.0 Australia license. Attribute: Laurence Mound, ANIC, CSIRO