. Cooperative economic insect report. Beneficial insects; Insect pests. 901 - FORAGE LEGUMES PEA APHID (Acyrthosiphon pisum) - MARYLAND - Ranged 7-100 per sweep on alfalfa near Thurmont, Frederick County. (U. Md., Ent. Dept., Sept. 2). MICHIGAN - Pop- ulations in Lenawee County alfalfa vary greatly; 200+ per 10 sweeps in some fields with young regrowth. Extremely low in other fields. (Dowdy). INDIANA - Ranged 10-30 per sweep on alfalfa in north central district. (White). WISCONSIN - Con- tinues to increase; parasitism and predation also increasing. (Wis. Ins. Sur.). KANSAS - Ranged 10-20 per 1
. Cooperative economic insect report. Beneficial insects; Insect pests. 901 - FORAGE LEGUMES PEA APHID (Acyrthosiphon pisum) - MARYLAND - Ranged 7-100 per sweep on alfalfa near Thurmont, Frederick County. (U. Md., Ent. Dept., Sept. 2). MICHIGAN - Pop- ulations in Lenawee County alfalfa vary greatly; 200+ per 10 sweeps in some fields with young regrowth. Extremely low in other fields. (Dowdy). INDIANA - Ranged 10-30 per sweep on alfalfa in north central district. (White). WISCONSIN - Con- tinues to increase; parasitism and predation also increasing. (Wis. Ins. Sur.). KANSAS - Ranged 10-20 per 10 sweeps in alfalfa in Haskell, Stanton, Grant, Hamil- ton, Finney and Gray Counties. (Simpson). NEW MEXICO - Light on alfalfa over State. (N. M. Coop. Rpt., Sept. 2). PLANT BUGS - INDIANA - Lygus lineolaris adults 1-7 per sweep in northern counties; Adelphocoris lineolatus 1-4 per sweep. A. lineolatus adults and nymphs 5-7 and L. lineolaris adults 2 per sweep in southern counties. (White, Sept. 2). KANSAS - Plant bugs 5-20 per 10 sweeps in alfalfa in Butler, Sedgwick, Cowley and Suinner Counties. (Redding). Lygus spp. low in most alfalfa in south central and south- west areas. (Simpson). NEW MEXICO - Lygus spp. light to moderate on alfalfa in Chaves, Eddy, Rio Arriba and Valencia Counties. (Kloepfer et al., Sept. 2). (Philaenus spumarius tions very similar to those of 1965. Meadow Spittlebug Survey in Illinois Fall 1966 Light to moderate Noneconomic. Upper figure Lower figure - State average County average Highest field average - ) - ILLINOIS - Fall survey indicates popula- Noneconomic in most areas; light to moderate in small area in northwest portion of State. Accompanying map shows county average counts. State average (White et al.). INDIANA - Adults moving to alfalfa in northern areas. Popula- tions range 4 per 5 sweeps to 6 per sweep. (Huber, White). MARYLAND - Adults 2-4 per sweep on alfalfa in Frederick and Queen Annes Counties. (U. Md., Ent
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