New Pest Response Guidelines - aphis - US Department of Agriculture

Control Procedures
Predators
Predators including insects, birds, and mammals are also important biological
control agents in a forest ecosystem (Sierpinska, 1998). Ants such as Formica
polyctena Foerster and F. nigricans Emery have shown to be effective
biological control agents for first and second instar larva of Dendrolimus
moths (Malysheva, 1963). Ants are important natural enemies of young
Dendrolimus larvae. Predation on first, second and third instar larvae on the
forest floor by Camponotus japonicus Mayr was 70, 23, and 10%, respectively
(Wang et al., 1991). Similarly, predation by Formica japonica Motschoulsky
was 47, 27 and 10%, respectively (Wang and Wu, 1991). In Guangxi, China,
Polyrhachis dives Smith and Crematogaster artifex Mayr build nests in trees or
on the ground. In stands where these ants are common, D. punctatus seldom
reach large numbers (Chen, 1990). Other important predatory enemies include
praying mantis, wasps, katydids, predatory true bugs (e.g., Pentatomidae,
Reduviidae), spiders and birds (CABI, 2011b) (Refer to Appendix D for more
detailed lists.
Microorganisms
Representatives of the genus Dendrolimus are carriers of the Dendrolimus
cytoplasmic polyhedrosis virus (DsCPV-1) and susceptible to infection by the
virus from another closely related species. Data has been presented on the
virulence of D. pini DsCPV-1 for D. spectabilis and D. superans
(Chkhubianishvili and Katagiri, 1983). Other Dendrolimus moth species
isolated with the same virus include D. punctatus, D. tabulaeformis, D. p.
tehchangensis, and D. p. wenhangensis. (Zhao et al., 2004b)
This approach is still under study. It should be possible to produce and release
this virus in the quantity required to seriously affect any invasive Dendrolimus
moth population and should be incorporated into an IPM system when
available
6-12 Dendrolimus Pine Moths 12/2012-01