. Cooperative economic insect report. Beneficial insects; Insect pests. - 397 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES PINE LOOPER (Bupalus piniarius (Q) Economic Importance: Destructive outbreaks of this geometric! occur periodically in pine forests of Europe. Such infestations in Sweden in 1944 and in the British Isles in 1953 warranted aerial treatment. These were the first instances of aerial treatment against a forest defoliator in either country. One of the worst outbreaks (1892-96) on the Continent was responsible for destruction of pine forests on over 900,000 acres. Infestati
. Cooperative economic insect report. Beneficial insects; Insect pests. - 397 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES PINE LOOPER (Bupalus piniarius (Q) Economic Importance: Destructive outbreaks of this geometric! occur periodically in pine forests of Europe. Such infestations in Sweden in 1944 and in the British Isles in 1953 warranted aerial treatment. These were the first instances of aerial treatment against a forest defoliator in either country. One of the worst outbreaks (1892-96) on the Continent was responsible for destruction of pine forests on over 900,000 acres. Infestation development in some countries seems to be favored by areas of low rainfall or extended periods of drought. Trees in the 25-50-year-old range are generally most heavily infested. Distribution: Most of Europe. Hosts: Pinus spp. Attacks other conifers only in exceptional General Distribution of Bupalus piniarius (Geometridae, Lepidoptera) No. 85 of Series. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs; United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Division. Hyattsville, MD. [etc. ] Plant Protection and Quarantine Programs Animal and Plant Health Service
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Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
