. Cooperative economic insect report. Beneficial insects; Insect pests. - 903 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES WHEAT BULB FLY (Hylemya coarctata Fallen) Economic Importance: Larvae of this muscid caused an estimated minimum loss of about 1,200,000 pounds sterling on wheat in England in 1953. The infestations were responsible for reseeding of 59,000 acres and partial replanting of an addit- ional 58,000 acres. Another 85,000 acres were affected to various extents. Large outbreaks, involving from 12 to 44 percent of wheat stems, occurred in Russia in 1913. Wheat, rye and sometim
. Cooperative economic insect report. Beneficial insects; Insect pests. - 903 - INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES WHEAT BULB FLY (Hylemya coarctata Fallen) Economic Importance: Larvae of this muscid caused an estimated minimum loss of about 1,200,000 pounds sterling on wheat in England in 1953. The infestations were responsible for reseeding of 59,000 acres and partial replanting of an addit- ional 58,000 acres. Another 85,000 acres were affected to various extents. Large outbreaks, involving from 12 to 44 percent of wheat stems, occurred in Russia in 1913. Wheat, rye and sometimes barley are damaged in several other European areas. Outbreaks in Denmark tend to be more severe when winters are mild and damage in England and Scotland is usually found in areas with less than 30 inches of annual rainfall. Distribution: Occurs in Austria, Denmark, France, Germany, Poland, Netherlands, Norway, Sweden, USSR (European and eastern Siberia) and the British Isles. There are also records from Tunisia and Iraq. Hosts: Winter wheat is chief cultivated host but will attack winter rye and barley. Oats are not attacked. Among wild hosts, quackgrass is preferred in Damaged Wheat Plaat 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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