Volume 21 July 23, 1971 Number 30 



COOPERATIVE ECONOMIC INSECT REPORT 



HIGHLIGHTS 



Current Conditions 



ARMYWORM expected to increase on small grain in eastern South Dakota. CORN LEAF 

 APHID heavy on sorghum in Oklahoma and Indiana, (p. 521). GREENBUG building up 

 on sorghum in South Dakota. Damaged sorghum in Missouri. Economic in sorghum in 

 Kansas. Moderate in Oklahoma, (pp. 521-522). 



EUROPEAN CORN BORER heavy in corn in Maryland and Iowa. (pp. 522-523). 



PLUM CURCULIO larvae damaged cherries in Michigan. PEARSLUG damaged cherry and 

 pear in Utah. (p. 529). 



HORN FLY troublesome to cattle in several States. TABANID FLIES annoying livestock 

 in Utah and New Mexico, (p. 533). 



GRASSHOPPERS heavy in grasslands in Wyoming, Washington, Nevada, North Dakota, 

 Nebraska, and Idaho, (p. 534). 



Detection 



New State records include an ARMORED SCALE from Delaware (p. 532) and a 

 MEMBRACID from Hawaii (p. 536). 



For new county and parish records see page 535. 



Special Reports 



Distribution of Carrot Rust Fly. Map. (p. 538). 



Reports in this issue are for week ending July 16 unless otherwise indicated. 



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