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New Pest Response Guidelines - aphis - US Department of Agriculture

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Identification<br />

horns on the terminal dorsal side <strong>of</strong> the abdomen. Tufts are absent in the PTL<br />

larva (Figure 3-14 on page 3-17).<br />

Figure 3-13 Adults <strong>of</strong> the Douglas-fir Tussock moth, Orgyia pseudotsugata<br />

(Sources: Ladd Livingston, Idaho <strong>Department</strong> <strong>of</strong> Lands,<br />

Bugwood.org(top) and Jerald E. Dewey, <strong>US</strong>DA Forest Service,<br />

Bugwood.org).<br />

3-16 Dendrolimus Pine Moths 12/2012-01

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