Volume 21 July 30, 1971 Number 31 



COOPERATIVE ECONOMIC INSECT REPORT 



HIGHLIGHTS 



Current Conditions 



GREENBUG damaged sorghum in Missouri, Kansas, Iowa, and South Dakota, (pp. 541- 

 542). HORNWORM moths heavier than normal in Wisconsin and Michigan, (p. 542). 

 POTATO LEAFHOPPER building up in central New York. Damaged alfalfa in Pennsylvania 

 and Wisconsin, soybeans in Ohio. (p. 542). 



EUROPEAN CORN BORER infestations heavy in Maryland, damaged corn in Ohio. (p. 542), 

 WESTERN BEAN CUTWORM moths heavy in light traps in Nebraska, (p. 543). CORN 

 ROOTWORMS lodging corn in Wisconsin, root damage reported in South Dakota; 

 damaged corn for first time in many years in Utah. (p. 544). 



SATIN MOTH unusually heavy in Oregon. Larvae of a NOTODONTID MOTH expected to 

 cause severe defoliation on Manistee National Forest in Michigan, (p. 551). 



GRASSHOPPERS continue heavy in several States, (p. 553). 



Large scale control program underway against vectors of Venezualan equine 



•encephalomyelitis in Texas, (pp. 552-553). As of July 27, a total of 

 3,001,461 acres in Texas treated one time; of this total 382,619 acres 

 treated for second time. In Louisiana 720,272 acres treated one time. 



Detection 



New State records include a MOSQUITO from Maryland (p. 522), a PLATYGASTERID 

 WASP and a EURYTOMID WASP from Pennsylvania (p. 553). 



For new county, island, parish, and independant city records see page 548. 



Special Reports 



Estimates of Damage by the European Corn Borer to Grain Corn in the United States 

 in 1970. (pp. 557-558) . 



Reports in this issue are for week ending July 23 unless otherwise indicated. 



539 



