New Pest Response Guidelines - aphis - US Department of Agriculture

Dendrolimus
Pine Moths
Figures
Figure 2-1 World Distribution of A) Dendrolimus sibiricus and B) Dendrolimus
superans. Maps obtained from the European Plant Protection
Organization database 2-9
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 10years
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. 2-11
Figure 2-3 Life cycle of Dendrolimus pini illustrating the observed presence
and timing of different stages throughout the typical calendar
year. Vertical lines with a W indicate break in the calendar for
winter months when the larvae are not actively feeding. Arrows
indicate the migration of larvae down to the forest floor or returning
up into the tree canopy. White boxes with numbers indicate
the instar number of overwintering larvae. Adult emergence,
mating and egg laying is approximated with a butterfly icon on
the calendar. 2-18
Figure 2-4 Life cycle of Dendrolimus punctatus illustrating the observed
presence and timing of different stages throughout the typical
calendar year. Illustration legend follows Figure 2-3, except
overwintering period is indicated completely across the calendar
in this figure instead of abbreviated. Lighter lines indicate
successive generations, indicating the possibility that overlapping
generations might be present in the same population. 2-
20
Figure 2-5 Life cycle of Dendrolimus sibiricus illustrating the observed
presence and timing of different stages throughout the typical
calendar year, following conventions used in Fig. 2-3. 2-22
Figure 2-6 Life cycle of Dendrolimus superans illustrating the observed
presence and timing of different stages throughout the typical
calendar year, following conventions used in Fig. 2-3. Moths
that overwinter once have a 2 season life cycle, while some
moths overwinter twice and diapause in the summer, resulting
in a three season life cycle. 2-23
Figure 2-7 Defoliated larch trees by Dendrolimus sibiricus in Mongolia
12/2012-01 Dendrolimus Pine Moths LOF-1