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SPECIAL INSECTS OF REGIONAL SIGNIFICANCE 



ASTER LEAFHOPPER (Macrosteles f ascifrons ) - COLORADO - Counts decreased on lettuce. 

 Incidence of aster yellows averages 9 percent in 8 fields in Otero and Pueblo 

 Counties. (Schweissing) . 



BEET LEAFHOPPER (Circulifer tenellus ) - COLORADO - Ranged 0-100 per 100 sweeps of 

 sugar beets in Pueblo, Crowley, Otero, and Prowers Counties. (Schweissing), 



CORN EARWORM (Heliothis zea ) - UTAH - Infested 60 percent of sweet corn in Iron 

 County (Sjoblom), moderate in Utah County (Home) , and 3-15 percent infested in 

 Juab, Cache, Salt Lake, Tooele, and Davis Counties (Burningham, Knowlton) . 

 OKLAHOMA - Ranged 0-3 per head in few fields of grain sorghum in soft dough stage 

 in Grady, Washita, and Caddo Counties. Heavy on sorghum in Cotton County and 

 light in Kay and Noble Counties. Averaged 2 or 3 per 10 sweeps of alfalfa in 

 Caddo and Washita Counties. (Okla. Coop. Sur.). KANSAS - Larvae averaged 0.1 per 

 corn ear in Greeley County field. In Franklin County, averaged 8 percent damage 

 in 3 fields; in Miami County, 10 percent damage in 2 fields, in Johnson County, 

 5 percent in 4 fields. (Bell). NEBRASKA - Very light, ranged 0-3, averaged less 

 than 1 per 25 ears in 11 cornfields in Loup, Brown, Rock, and Keya Paha Counties. 

 (Berogan) . WISCONSIN - Blacklight trap catches continue light. Larvae in field, 

 light or nonexistent in all areas. According to blacklight catches no significant 

 flights occurred and no treatment justified. (Wis. Ins. Sur.). 



DELAWARE - Adults averaged 27 per night in blacklight trap collections in Sussex 

 County and increased in Kent County. (Burbutis, Lesiewicz) . MARYLAND - Heliothis 

 zea ) moth counts averaged 43 per night in Dorchester County and ranged 1-6 per 

 night in Worcester and Queen Annes Counties. Heavy egg laying on snap beans and 

 soybeans expected in Dorchester County next 2 weeks. Infested field corn ranged 

 4-12 percent in Kent, Queen Annes, and Talbot Counties. (U. Md., Ento Dept.). 

 VIRGINIA - Larvae feeding on sorghum heads averaged less than 4 per row foot in 

 Dinwiddle, Sussex, and Richmond Counties. (Allen). NORTH CAROLINA - Infestation 

 in Coastal Plains less than one larva per row foot of soybeans (threshold 

 level); some fields near economic levels. Late varieties should be watched. 

 (Cullipher, Bradley) . TENNESSEE - Surveys in soybeans in central and western 

 areas indicate population below control levels. (Gordon). ARKANSAS - Continue 

 to increase in soybean fields; small percentage of fields treated in east-central 

 and southeast areas where infestations more common. Heaviest counts ranged 60-70 

 per 30 row feet. Treatment level, 60 larvae per 30 row feet, determined by plant 

 shaking method. (Boyer) . ALABAMA - Larvae heavy, 4-5 per head, in 105 acres of 

 grain sorghum in Sumter County field. (Lashley, Henderson) . GEORGIA - Damaged 

 sorghum in southern areas, (French). FLORIDA - Larvae common in unsprayed 

 flowering sorghum heads at Quincy, Gadsden County. (Greene). SOUTH CAROLINA - 

 Extremely widespread on soybeans east of Columbia, Richland County. Damage 

 dependent on control (Thomas). Little damage in Orangeburg County. Good control 

 (Langf ord) , 



GREENBUG (Schizaphis graminum ) - TEXAS - Light to moderate in Trans-Pecos area; 

 ranged 20-70 per plant in most fields, (Neeb) , COLORADO - Decreased in sorghum 

 in Arkansas Valley; none found in some fields. (Schweissing), IOWA - Specimens 

 collected in grain sorghum in O'Brien County August 16. This is a new county 

 record. (Iowa Ins. Sur.). 



HORNWORMS (Manduca spp.) - TENNESSEE - Continue to cause moderate damage to 

 unharvested tobacco in Franklin County. One larva to every 5 stalks. About 50 

 percent parasitized. (Cagle) , 



POTATO LEAFHOPPER (Empoasca fabae ) - MARYLAND - Adults and nymphs ranged 5-15 per 

 row foot in 200 acres of snap beans in Wicomico County, Leaf hoppers in soybeans 

 remain light, ranged 1-5 per row foot, statewide. Ranged less than 1 per row 

 foot in 100 acres of carrots in Caroline County. (U. Md., Ent. Dept.), 



