. Cooperative economic insect report. Insect pests Control United States Periodicals. - 450 - SPOTTED ALFALFA APHID (Therioaphis maculata) - ILLINOIS - Varied 0-50 (average 10) per 100 sweeps in southeast district alfalfa. (White). NEBRASKA - Of counties surveyed in southwestern and southern areas, found only in Furnas County; 2 per 100 sweeps. (Manglitz). COLORADO - Found in alfalfa northeast of Walsh, Baca County; 30-60 per 100 sweeps. Only 16 percent winged forms. (Schweissing). OKLAHOMA - Occasionally heavy locally in northwest area alfalfa; 1-10 per 10 sweeps in Garvin and McClain Countie
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 450 - SPOTTED ALFALFA APHID (Therioaphis maculata) - ILLINOIS - Varied 0-50 (average 10) per 100 sweeps in southeast district alfalfa. (White). NEBRASKA - Of counties surveyed in southwestern and southern areas, found only in Furnas County; 2 per 100 sweeps. (Manglitz). COLORADO - Found in alfalfa northeast of Walsh, Baca County; 30-60 per 100 sweeps. Only 16 percent winged forms. (Schweissing). OKLAHOMA - Occasionally heavy locally in northwest area alfalfa; 1-10 per 10 sweeps in Garvin and McClain Counties. (Okla. Coop. Sur.). NEW MEXICO - Winged adults relatively abundant in numerous alfalfa fields in northern Dona Ana County. No young aphids observed. (Elson, Nielsen). Very light to light in Socorro and Lea County alfalfa. (Mathews, Kloepfer, Heninger). CORN, SORGHUM, SUGARCANE EUROPEAN CORN BORER (Qstrinia nubilalis) - IOWA - Winter mortality lower than average, but total number of live borers also much lower than average. Live borers per acre of oat ground surveyed 871 compared with 3,146 in 1965. First pupa of 1966 found at Ankeny May 13; 100 day-degrees ahead of average, perhaps due to high temperatures of previous week. (Iowa Ins. Inf., May 16). DELAWARE - Adult flights remain unusually low in Sussex County; blacklight trap collections averaged less than one per night during last week. (Burbutis). LESSER CORNSTALK BORER (Elasmopalpus lignosellus) - FLORIDA - Larvae severe in corn at Citra, Marion County. (Douglass, May TO). VARIEGATED CUTWORM (Peridroma saucia) - ARIZONA - Moderate and damaging sorghum in many fields in Coolidge area, Pinal County, and in scattered areas of southern Maricopa County. (Ariz. Coop. Sur.). MISSOURI - Damaging marginal rows of corn in southeast. (Jones). CORN R00TW0RMS (Diabrotica spp.) - WISCONSIN - Accompanying map shows results of spring survey to ascertain infestation potential. The "X" indicates approximate location of soil sam
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