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SPECIAL INSECTS OF REGIONAL SIGNIFICANCE 



GREENBUG ( Schizaphis graminum ) - NEW MEXICO - Light, ranged 1-2 per linear yard 

 of barley at Roswell, Chaves County. (N.M. Coop. Rpt . ) . Light on barley at 

 Carlsbad, Eddy County. Light and spotty on wheat near Clevis, Curry County. 

 (Mathews). TEXAS - Moderate in Hardeman County field. Several growers applied 

 controls. Some spraying in Dickens and Motley Counties. Light infestations in 

 Archer, Jones, Foard, and Wilbarger Counties. Infestations primarily from oat- 

 fields. (Boring). Light to heavy on small grain in Motley County near Matador, 

 in late November. Some controls applied. Infestations appeared to be widespread. 

 (Pallmeyer) . Infestations increased in Rolling Plains areas, ranged light to 

 heavy. Some chemical control applied. Greenbugs reported killing 15 acres of 

 wheat in a portion of Throckmorton County late this period. (Boring) . OKLAHOMA - 

 Counts of 20 and 3 per linear foot of wheat in 2 fields in Payne County. 

 Infestations that ranged up to 150 per linear foot in Woodward County wheat 

 December 3 declined due to cold weather. Populations remained unchanged in Payne 

 County; ranged 5-30 per linear foot. Light in small grain in Garfield County. 

 (Okla. Coop. Sur.). KANSAS - Damaging infestation in small area of Lincoln 

 County, ranged 1,000 to 1,200 per row foot of wheat. About 25 percent stand loss 

 occurred in one field. Some survey in Riley, Clay, Dickinson, and Wabaunsee 

 Counties and ranged 10-50 per row foot with no apparent damage. (Gates et al.). 

 Infestations noted on wheat in Washington and Jewell Counties, Economics 

 unknown as of December 10. Expect limited problems as long as cold weather 

 continues. (Bell). MISSISSIPPI - Light on wheat in Oktibbeha County. (Robinson). 



SPOTTED ALFALFA APHID (Therioaphis maculata ) - ARIZONA - Counts of 870 per 100 

 sweeps of alfalfa in Yuma County, November 16. Ranged 110-800 per 100 sweeps of 

 alfalfa at Yuma; one field with 4,800 per 100 sweeps with leaves turning purple. 

 Ranged 25-350 at Parker, second week of period. Counts of 360 per 100 sweeps of 

 alfalfa in Yuma County, third week of period. Counts of 540 per 100 sweeps in 

 2 Yuma County alfalfa fields; and 277 in Maricopa County field late in this 

 period. (Ariz. Coop. Sur.). ARKANSAS - Still light, ranged 25-50 in 100 sweeps 

 in northwest areas. (Beyer). MINNESOTA - Specimen found on alfalfa in Dakota 

 County. Determined by E. Cook and A.G. Peterson, in August. This is a new county 

 record. (Minn. Pest Rpt.). 



CORN, SORGHUM, SUGARCANE 



EUROPEAN CORN BORER (Ostrinia nubilalis) - NEBRASKA - Heavy larval populations 

 and low levels of disease, in combination with favorable overwintering conditions, 

 could lead to another outbreak of first-brood borers in 1972 in the south and 

 central districts. (Hill et al.). 



SOUTHWESTERN CORN BORER (Diatraea grandiosella ) - NEW MEXICO - Infested 80 

 percent of stalks checked at Clovis, Curry County. (Mathews). 



A WEEVIL (Anacentrinus deplanatus) - MISSISSIPPI - Adults, larvae, and pupae 

 collected from roots of grain sorghum in Quitman County on July 28 and October 

 28. Determined by R.E. Warner and D.M. Anderson. This is a new county record, 

 also new host record. Infestation involved 300 acres and plants appeared to need 

 moisture. Damage moderate. (Robinson). 



SMALL GRAINS 



AN APHID (Rhopalosiphum padi ) - VIRGINIA - Collected on wheat in Botetourt 

 County on May 7, 1970 by W.A. Allen. Determined by L.M. Russell. This is a new 

 State record. (Allen). OKLAHOMA - First of season, less than 1 per linear foot 

 in wheat in Payne County. (Okla. Coop. Sur.). 



WINTER GRAIN MITE ( Penthaleus major ) - OKLAHOMA - Averaged 20 per linear foot of 

 wheat in Payne County. (Okla. Coop. Sur.). 



