New Pest Response Guidelines - aphis - US Department of Agriculture
New Pest Response Guidelines - aphis - US Department of Agriculture
New Pest Response Guidelines - aphis - US Department of Agriculture
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Chapter<br />
8 Pathways<br />
Contents<br />
Introduction<br />
Overview<br />
Introduction 8-1<br />
Overview 8-1<br />
Geographical Distribution 8-2<br />
Destinations 8-3<br />
Establishment and Spread 8-3<br />
Natural Spread 8-3<br />
Human-Assisted Spread 8-4<br />
Use Chapter 8: Pathways as a source <strong>of</strong> information on the pathways <strong>of</strong><br />
introduction <strong>of</strong> the Dendrolimus spp. moths in the United States, including<br />
Dendrolimus pini (L.) Pine-tree lappet; Dendrolimus punctatus (Walker),<br />
Masson pine caterpillar; Dendrolimus sibiricus Tschetverikov, Siberian silk<br />
moth; and Dendrolimus superans (Butler), Sakhalin silk moth.<br />
The entry and establishment <strong>of</strong> Dendrolimus moths poses a serious threat to the<br />
United States coniferous forests and to those industries that rely on forest<br />
species like the Christmas tree industry. In the <strong>US</strong>, several species <strong>of</strong> conifers<br />
with significant value for timber, Christmas trees and wood by-products are<br />
listed as natural hosts for this pest. With the increase volume <strong>of</strong> international<br />
trade and passengers arriving to the United States, the risk <strong>of</strong> unintentional<br />
introductions <strong>of</strong> pine-tree lappet increases. Dendrolimus moths have not been<br />
reported in this United States by the time this report was written.<br />
12/2012-01 Dendrolimus Pine Moths 8-1
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