New Pest Response Guidelines - aphis - US Department of Agriculture

Survey Procedures
5. Clearly mark the areas sampled whether it is an area on the ground where
soil samples were taken or a tree. Mark the sampled location with
flagging whenever possible, and draw a map of the immediate area and
indicate reference points so that the areas can be found in the future if
necessary. Do not rely totally on the flagging or other markers to relocate
a site as they may be removed by other parties or degraded over
time. Record the GPS coordinates for each infested host plant location so
that the area or plant may be re-sampled if necessary.
Survey task forces should consist of an experienced survey specialist or
entomologist familiar with Dendrolimus moths and the symptoms of
infestation.
Detection Survey
Use a detection survey to determine whether a pest is present in a defined area
where it is not known to occur. The detection survey can be broad in scope, as
when assessing the presence of the pest over large areas or it may be restricted
to determining if a specific pest is present in a focused area (i.e., a greenhouse).
Statistically, a detection survey is not a valid tool to claim that a pest does not
exist in an area, even if results are negative. Negative results can be used to
provide clues about the mode of dispersal, temporal occurrence, or industry
practices. Negative results are also important when compared with results from
sites that are topographically, spatially, or geographically similar.
Procedure
Use the following tools singly or in any combination to detect Dendrolimus
moths:
1. Focus on high risk areas where moths are more likely to be found. See
Targeted Survey on page 4-5 for detailed information.
2. Establish regular sites to inspect along your normal surveying route. See
Sentinel Site Survey on page 4-5 for detailed information.
3. Check plants for pest presence and damage. See Visual Inspection of
Plants on page 4-5 for detailed information
Delimiting Survey after Initial U.S. Detection
Use a delimiting survey to determine the type and extent of control measures to
apply. If Dendrolimus moths are detected in the United States, delimiting
surveys will be needed to determine the distribution of the pest. In large areas,
locating the source of an infestation could be difficult.
12/2012-01 Dendrolimus Pine Moths 4-3