New Pest Response Guidelines - aphis - US Department of Agriculture

Pest Information
Hosts
Dendrolimus punctatus
Althought the main host for MPC, P. massoniana, is not found in the
conterminous United States, several alternate hosts are either native or used in
plantation foresty. Known alternative hosts (see Hosts on page 2-12) such as P.
echinata, P. elliotii, and P. taeda are abundant and widely used timber
resources across the Southeastern United States.
Dendrolimus sibiricus and Dendrolimus superans
Based on climatological match data obtained from the pest native range
(Figure 2-1 on page 2-9) and the potential host distribution in the United
(Alaska included) (Figure 2-3 on page 2-18), the SSM and the SaSM have the
highest potential to establish in coniferous forests of the northern half of the
Western United States, Alaska, the upper Northeastern states and in areas of
Minnesota, Wisconsin and Michigan. Although several species of Pinaceas are
widely distributed in the Southeastern and Midwestern part of the
conterminous United State, the likelihood of establishment is low because of
undesirable climatological conditions. The relatively warm fall and winter in
these areas are unsuitable for the development of the SSM or the SaSM,
potentially resulting in the death of hibernating larvae (Baranchikov, Personal
communication).
The larvae of species in the genus Dendrolimus only infest conifer trees.
Potential hosts are listed in Table 2-3 on page 2-7.
Dendrolimus pini
The primary host of PTL is Scots pine (Pinus sylvestris). The PTL can also
successfully develop on 17 species of pine, as well as Douglas-fir
(Pseudotsuga menziesii and hemlock (Tsuga canadensis). Although most of
the species were tested under laboratory conditions, these data clearly show
that the PTL host range is possibly broader than is currently known. Most of
these species are of economic importance in the United States.
Some of the coniferous tree species in the United States are also reported as
primary or secondary host in Europe and Asia (i.e., Picea sitchensis, Pinus
contorta, P. strobus and P. sylvestris).
2-12 Dendrolimus Pine Moths 12/2012-01