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Abstract A. The 1942 Infestation (Complete Record) 1. Primary insect- Western pine beetle in ponderosa pine 2. total pine timber killed on reporting area (Table 2) No. trees Volume b.m. av. Vol./acre No. trees/sec. %stand 28,770 14,865,000 21 26 0.34 3. Classification of the infestation - :pw endemic 4. Trend of the infestation – Approximately the same as 1941 5. Size of average tree killed – 1,100 board feet B. The 1943 Infestation (Incomplete Record) 1. Primary insect – Western Pine Beetle in ponderosa pine 2. Probable trend – slightly higher than in 1942 3. size of average tree killed – 1,300 board feet 4. control work recommended – none C. Miscellaneous Insects 1. Serious defoliation of range plants by the Great Basin Tent Caterpillar 2. serious defoliation of lodgepole pine in local areas by the lodgepole sawfly. 3. local damage to pine foliage by the ponderosa pine needle miner.
Abstract A. The 1942 Infestation (Complete Record) 1. Primary insect- Western pine beetle in ponderosa pine 2. total pine timber killed on reporting area (Table 2) No. trees Volume b.m. av. Vol./acre No. trees/sec. %stand 28,770 14,865,000 21 26 0.34 3. Classification of the infestation - :pw endemic 4. Trend of the infestation – Approximately the same as 1941 5. Size of average tree killed – 1,100 board feet B. The 1943 Infestation (Incomplete Record) 1. Primary insect – Western Pine Beetle in ponderosa pine 2. Probable trend – slightly higher than in 1942 3. size of average tree killed – 1,300 board feet 4. control work recommended – none C. Miscellaneous Insects 1. Serious defoliation of range plants by the Great Basin Tent Caterpillar 2. serious defoliation of lodgepole pine in local areas by the lodgepole sawfly. 3. local damage to pine foliage by the ponderosa pine needle miner.