. Cooperative economic insect report. Beneficial insects; Insect pests. 905 ARMYWORM (Pseudaletia unipuncta) - ILLINOIS grassy cornfields observed in northern area, parasitized. (111. Ins. Rpt.). Light feeding on grass and corn in Most larvae nearly full grown or BLACK CUTWORM (Agrotis Ipsilon) - OREGON - Economic damage reported on corn in Marion and Washington Counties. (Hanna, July 27). WESTERN BEAN CUTWORM (Loxagrotls albicosta) - NEBRASKA - Populations in Dundy County at very low level; approximately one egg mass per 500 corn plants. Many fields had no egg masses. (Hagen). WESTERN CORN RO
. Cooperative economic insect report. Beneficial insects; Insect pests. 905 ARMYWORM (Pseudaletia unipuncta) - ILLINOIS grassy cornfields observed in northern area, parasitized. (111. Ins. Rpt.). Light feeding on grass and corn in Most larvae nearly full grown or BLACK CUTWORM (Agrotis Ipsilon) - OREGON - Economic damage reported on corn in Marion and Washington Counties. (Hanna, July 27). WESTERN BEAN CUTWORM (Loxagrotls albicosta) - NEBRASKA - Populations in Dundy County at very low level; approximately one egg mass per 500 corn plants. Many fields had no egg masses. (Hagen). WESTERN CORN ROOTWORM (Diabrotica virgifera) County, farm on July 22. Madison, Union and Adams Counties. Map below gives known distribution of species in State. (Iowa Ins. Inf., July 29). IOWA - Collected on Ankeny, Polk New county records include Hancock, Story, Dallas, WESTERN CORN ROOTWORM IN IOWA - 1963. .;.; - Present W, - Problem MISSOURI - High populations observed in fields scattered over extreme northwest; ranged 4-38 per plant in infested fields. (Munson, Thomas, Wood; July 27). SOUTH DAKOTA - Adults observed in McCook and Hanson Counties on corn and alfalfa. High population, 40-50 adults per stalk, observed in Tabor area of Bon Homme County, with counts 25-30 adults in surrounding area. High counts also observed in Charles Mix and Hutchinson Counties. (Kantack, Hintz; July 24). NEBRASKA - Adults continued to emerge and feed on leaves, silks and tassels of corn; populations and damage to corn in panhandle in both treated and untreated fields higher than previous years. (Bergman, July 26). KANSAS - This species and D^ longicornis causing alarm by damaging silks of corn in Wyandotte County, northeast. (Burkhardt) NORTHERN CORN ROOTWORM (Diabrotica longicornis) - IOWA - Caused severe damage to corn fields in Marshall, Jones and Iowa Counties treated with one of two chlorin- ated hydrocarbons. Lodging as high as 80 percent, with 5-10 adults per silk in. Please note that these images are
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