The Asian longhorned beetle is a serious pest in China where it kills hardwood trees. In China, Asian longhorned beetle prefers maple, poplar, and willow. Other hosts include chinaberry, mulberry, plum, pear, black locust, and elm. Thus far in North America, the Asian longhorned beetle has been reported to attack 18 broadleaf tree species in 12 genera. These include horsechestnut and buckeye, green ash, rose of Sharon, birch, Norway maple, and box elder.
Because of its wide host range and ability to kill trees, Asian longhorned beetle has the potential to alter many North American ecosystems. This insect has attacked trees in North America not recorded as hosts in Asia (e.g. horse chestnut) and may find more suitable hosts in areas not presently infested. New hosts could include trees with limited natural ranges. Asian longhorned beetle is likely to alter tree species composition and age structure in broadleaf forests, especially those comprised largely of maples or poplar. Because willows are among Asian longhorned beetle preferred hosts, additional adverse impacts may occur in wetlands. Moreover, protection of urban areas could involve use of chemical insecticides with accompanying effects on non-target organisms.
Adults are capable of flying several hundred meters in a single flight. Because they can live for up to 66 days, they have the potential to cover considerable distances to locate suitable host trees. However, most adults fly only about 50-75 m to find a host. The Asian longhorned beetle is easily transported internationally in wood products such as logs, lumber, wooden packing materials, pallets or dunnage. Local human assisted spread is typically via transport of infested firewood. This insect has a relatively high reproductive potential and could find suitable host material in most forest or urban or areas of North America. Adults are large, conspicuous insects that are easily detected when present in large numbers. The immature stages are in wood and difficult to detect.
The Asian longhorned beetle is not known to occur in Indiana.