Sirex woodwasp (Sirex noctilio) has been the most common species of exotic woodwasp associated with solid wood packing materials detected at United States Ports-of-entry. Detections of Sirex noctilio in the Conterminous United States outside of port areas have raised concerns as this insect has the potential to cause significant mortality of pines.

Sirex noctilio Sample Areas were developed using the Susceptibility Surface. A total of 1,200 sample areas were assigned to one of four risk categories. Relative certainties were assigned to each category in order to create increasing plot intensifications for increasing risk stratums.