Ponderosa pine branch showing nearly complete defoliation of older needles, and most of the current-year needles in the pine butterfly outbreak on Emigrant Creek Ranger District, Malheur National Forest, Oregon. Photo by: Donald W. Scott Date: c.2011 Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Blue Mountains Forest Insect and Disease Center Photo source is Figure 18 in: Scott, Donald W. 2015 (DRAFT). Natural History of the Pine Butterfly,...
Topics: defoliation, figure18, r6, usda, stateandprivateforestry, malheurnationalforest, foresthealth, Blue...