Table 1.

Species of conifers killed by pine wilt disease in the U.S. as of June, 1981 (compiled by K. Robbins, U.S. Department of Agriculture, Forest Service, S. & P.F., St. Paul, MN)

Pine SpeciesNo. of CountiesStates
Pinus sylvestris108AR, DE, IL, IN, IA, KS,
KY, MD, MN, MO,  NJ,
VA, WV, Wl
P. resinosa27DE, IL, IN, IA, OH, TN, VT, WV, Wl
P. taeda23AL, DE, FL, IL, LA, MD, MS, NO, TN, TX, VA
P. nigra21IL, IN, IA, KY, MD, MN, MO, PA, TN, Wl
P. strobus20CT, DE, IL, IA, KY, MD, Ml, MN, MO, NE, NC, TN, VA, WV, Wl
P. thunbergii18AR, DE, MD, MO, NJ,
P. elliottii12FL, LA
  • The following species in 10 counties or less: P. banksiana, P. cembra, P. clausa, P. contorta var. murrayana, P. echinata, P. halepensis, P. mugo, P. palustris, P. ponde, P. ponderosa, P. radiata, P. rigida, P. virginiana, Larix laricina, L. decidua, Abies balsamea, Picea spp.(2), Cedrus deodora, C. atlantica.

    Data are assembled as counties from which the disease has been reported and nematodes have been identified as B. xylophilus. The prevalence within counties is not recorded.