. Cooperative economic insect report. Beneficial insects; Insect pests. 573 INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES PEAR SAWFLY (Hoplocampa brevis (Klug)) Economic Importance: This tenthredinid is an important pest of pears in many areas of Europe. Although infestations are not consistant from year to year, it is generally considered to be a very harmful species. Populations will remain unnoted for awhile, then sud- denly appear in very destructive numbers. In some years as high as 80 percent of the fruits will be attacked but infestations may be highly localized in fruit growing areas
. Cooperative economic insect report. Beneficial insects; Insect pests. 573 INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES PEAR SAWFLY (Hoplocampa brevis (Klug)) Economic Importance: This tenthredinid is an important pest of pears in many areas of Europe. Although infestations are not consistant from year to year, it is generally considered to be a very harmful species. Populations will remain unnoted for awhile, then sud- denly appear in very destructive numbers. In some years as high as 80 percent of the fruits will be attacked but infestations may be highly localized in fruit growing areas. During 1938-39, 60 to 80 percent of the pears were attacked in the Crimea of USSR. Distrubution: Occurs in European USSR, Romania, Greece, Italy, Netherlands, Britain (England), France, Yugoslavia, Denmark, Germany, Sweden, Spain, Belgium, Switzerland and Austria in Europe and in Syria and USSR (Turkestan) in Asia. Hosts: Pear is the major host. Also attacks plum and Damage to Pears. 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
