New Pest Response Guidelines - aphis - US Department of Agriculture

Survey Procedures
overwintering inside one-third radius of the tree canopy projection on the
ground (Sliwa, 1992) (Figure 4-4 on page 4-9 to Figure 4-5 on page 4-10).
Figure 4-2 Surveying for migrating caterpillars using glue bands. Bands with
glue are placed at eye level (1.5 to 2 m) around the tree and used
to trap migrating caterpillars (between March and April and
between November and December) and, to a lesser extent, adult
moths flying. © Crown Copyright 2010. Photo courtesy of Forest
Research, Scotland, UK/ Roger Moore.
4-8 Dendrolimus Pine Moths 12/2012-01