How is an Asian longhorned beetle commonly transported?

The Asian longhorned beetle is commonly transported through firewood because the beetle often infests hardwood trees, particularly maples. When people or companies use or move infested wood—whether for firewood, lumber, or other purposes—the larvae can remain within the wood. This makes it easy for them to be carried over long distances, leading to new infestations in non-infested areas.

Firewood is a prime vector for this pest because people frequently transport it for camping or heating purposes, often without realizing that it may contain beetles or larvae. The other choices, such as soil, water containers, or animals, are less relevant in the context of this beetle's spread. The biology and habits of the Asian longhorned beetle align specifically with the transportation of infested wood, which plays a significant role in the spread of this invasive species.