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During July, 1920, fly larvae were found destroying many fields of sugar-beets near Amalga, Utah. Maggots collected at this time were reared by H. J. Pack, and the flies were later determined as Tetanops aldrichi Hendel of the family Ortalidae. The flies are about 6 mm. in length, glossy black, with a smoky patch on the costal margin of the wing about one-third of the distance from base to tip.doi:10.1093/jee/15.6.388 fatcat:mvxs55xfdvdyxcytdinbdxlsxq