New Pest Response Guidelines - aphis - US Department of Agriculture

Potential Distribution
Pest Information
Dendrolimus pini
Based on climatological suitability and host presence and density in the United
States (Figure 2-2 on page 2-11) the risk of establishment of the PTL is higher
in temperate coniferous and mixed (coniferous and deciduous) forests. These
forests are distributed throughout the southern Appalachian mountain range,
the northeast, midwest (Minnesota, Michigan, Wisconsin, North Dakota), the
northwest regions of the United States and Alaska and are primarily found in
hardiness zones 4-7. Ecological and environmental conditions are not
appropriate for establishment in Puerto Rico, Hawaii or any of the United
States territories in the Pacific. The PTL has the highest risk of establishment
in temperate forests with high densities of Pinus spp.
Figure 2-2 NAPPFAST Risk Map for Establishment Potential Based on Climatic
Suitability of the PTL in the Conterminous United States (map
created by Jessica Engels, Roger Magarey and Dan Borchart;
USDA-APHIS-PPQ, Raleigh, NC). The NAPPFAST risk map
describes the relative climatic suitability (on a scale of 1-10) for a
pest to grow and survive. The maps are based on 10-years of
daily data from NAPPFAST. A value of one represents a low
likelihood of pest growth and survival, while a 10 indicates high
likelihood of pest growth and survival.
12/2012-01 Dendrolimus Pine Moths 2-11