Beyond the Asian longhorned beetle and emerald ash borer

The Asian longhorned beetle (Anoplophora glabripennis) and emerald ash borer (Agrilus planipennis) are exotic forest insects that have had severe impacts on host tree species where they have become established in North America in recent years. Several other exotic forest arthropods have also appeared recently in North America, but have gained less notoriety. Although their potential impacts are less, the full extent of their impacts remains unknown. Some examples of these other exotic arthropod species are the granulate ambrosia beetle (Xylosandrus crassiusculus), banded elm bark beetle (Scolytus schevyrewi), European wood wasp (Sirex noctilio), and a predatory itch mite (Pyemotes herfsi).