. Cooperative economic insect report. Beneficial insects; Insect pests. - 1299 CEREAL AND FORAGE INSECTS CHINCH BUG (Blissus leucopterus) - ILLINOIS - Annual fall survey completed for 1965. Populations much lower and area of economic infestations considerably smaller than in 1964. In central Chinch Bug Survey in Illinois - Fall 1965. Figures - Average number of bugs per square foot district, averaged 285 per square foot compared with 860 in 1964; in east district, averaged 389 per square foot compared with 2,502 in 1964. Accompany- ing map shows area surveyed and average number of B. leucopter
. Cooperative economic insect report. Beneficial insects; Insect pests. - 1299 CEREAL AND FORAGE INSECTS CHINCH BUG (Blissus leucopterus) - ILLINOIS - Annual fall survey completed for 1965. Populations much lower and area of economic infestations considerably smaller than in 1964. In central Chinch Bug Survey in Illinois - Fall 1965. Figures - Average number of bugs per square foot district, averaged 285 per square foot compared with 860 in 1964; in east district, averaged 389 per square foot compared with 2,502 in 1964. Accompany- ing map shows area surveyed and average number of B. leucopterus per square foot in each county. No very severe or severe infestations found. Moderate numbers found in Tazewell, Ford, Menard, Macon, Piatt, Moultrie and Douglas Counties; infestations light in Marshall, Living- ston, McLean, Logan and Champaign Coun- ties. Infestations noneconomic in other counties surveyed. (111. Ins. Rpt.). GREENBUG (Schizaphis graminum) - OKLA- HOMA - Ranged 1-4 per linear foot in wheat checked in Payne, Noble, Kay, Woods and Lincoln Counties; light in Cleveland County. (Okla. Coop, Sur.). MISSOURI - Damaging less than 2 percent of wheat in several fields in Clay and Jackson Counties. Damage limited to low spots and margins. Ranged 130-300 per row foot in damaged areas, 10-25 per row foot in remainder of field. (Thomas). ENGLISH GRAIN APHID (Macrosiphum avenae) - OKLAHOMA - Ranged 0-12 per linear foot of wheat in north central area; present in 50 percent of fields checked. (Okla. Coop. Sur.). APPLE GRAIN APHID (Rhopalosiphum fitchii) WASHINGTON - Nymphs and adults heavy in winter wheat and barley at Quincy, Grant County, October 29. (Hagel). CORN LEAF APHID (Rhopalosiphum maidis) - OKLAHOMA - Ranged 0-10 per linear foot in wheat in northwest and north central counties; light in Mayes County. (Okla. Coop. Sur.). AN APHID (Rhopalosiphum padi) - OKLAHOMA - Ranged 1-27 per linear foot in wheat in Payne, Noble, Kay, Grant, Garfield, Woods, Alfalfa and Lincoln
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