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SPECIAL INSECTS OF REGIONAL SIGNIFICANCE 



ARMYWORM (Pseudaletia unipuncta) - KENTUCKY - Larvae defoliated 3 percent of rice 

 plants in Wayne County"; controls 95 percent effective. Larvae averaged one per 

 stalk of sorghum in Carlisle County. (Barnett) . OHIO - Additional reports of 

 damage from Belmont, Champaign, and Harrison Counties. Most in last instar and 

 residing in whorls during day and moving to leaf tips during night. Newly emerged 

 moths appearing in blacklight traps June 25-28. (Blair et al.). MICHIGAN - 

 Collected 94 moths at Lenawee County station; 29 taken night of June 26, but non- 

 economic for area. Damage in corn very light, none observed in small grains in 

 Gladwin County. (Eiber) . WISCONSIN - Scattered, light infestations reported on 

 corn in Green, Sheboygan, and Walworth Counties. (Wis. Ins. Sur.). COLORADO - 

 Moths light in light traps in Weld County. (Urano, Hantsbarger) . 



ASTER LEAFHOPPER (Macrosteles fascifrons ) - WISCONSIN - Numerous on sweet corn 

 planting in western Dane County June 30; averaged 6 per 10 sweeps of carrots in 

 southeastern Jefferson County. Increase probably due to ripening and heading out 

 of grain; dispersal into lettuce, onion, potato, and carrot increased. (Wis. Ins. 

 Sur.) . 



CORN EARWORM (Heliothis zea ) - MARYLAND - Adult activity increasing on Eastern 

 Shore. Blacklight trap counts for week ending June 29 averaged 4 per night in 

 Queen Annes and Dorchester Counties. (U. Md., Ent. Dept.). NORTH CAROLINA - 

 Second-generation eggs abundant on cornsilks in Bertie, Johnston, and Columbus 

 Counties. (Hunt). KANSAS - Second and third instars infesting 15 percent of 

 whorls of 50-inch corn in Riley County. (Bell). OKLAHOMA - Heavy in corn tassels 

 in Cotton and Lincoln Counties and light to moderate in Cleveland County. Ranged 

 1-3 per ear in Payne County. (Okla. Coop. Sur.). 



CORN LEAF APHID (Rhopalosiphum maidis) - WISCONSIN - Small colonies evident on 

 few tassels of early sweet corn in western Dane County. Most colonies contained 

 less than 5 individuals; only single aphids detected on many plants. (Wis. Ins. 

 Sur.). MISSOURI - Light (1-6 percent of plants with colonies) in 8 of 21 fields 

 in northeast area. (Munson) . KANSAS - Occasionally heavy in sorghum in northeast 

 and east-central districts. Caused much reddening and some necrosis on 40 percent 

 of terminal leaves in one field in Nemaha County. Ranged by county (number of 

 fields per county in parentheses): Nemaha, 20-1,500+ (2); Washington, 100 (1); 

 Shawnee 25-800 (3); and Osage, 1,200 (1). (Bell). TEXAS - Infestations in grain 

 sorghum heavy in some areas of High Plains. Browning of leaf tips observed in 

 Crosby County. Moisture adequate and no economic damage observed. Moderate to 

 heavy in Knox County. (Rummel, Boring) . 



GREENBUG (Schizaphis graminum) - WASHINGTON - Present on wheat in Klickitat, 

 Benton, Franklin, Adams, and parts of Yakima, Walla Walla, Whitman, and Lincoln 

 Counties; populations declining rapidly due to maturation of grain, parasites, 

 and predators, particularly syrphids and lacewings. Minor damage in few spring 

 wheatfields, Greenbugs appearing on giant wild rye, fescue, quackgrass and other 

 grasses. (Klostermeyer) . COLORADO - Appearing in whorls of sorghum in Lamar area, 

 Prowers County. Ranged 15-25 per plant on 6 to 8-inch high sorghum. Heavy rain 

 past 7 days reduced numbers. (Hantsbarger, Hogan) , NEW MEXICO - Light and spotty 

 in fields of corn and sorghum at Hatch, Dona Ana County. (Riddle) . TEXAS - 

 Light to heavy with isolated damage in Robertson, Milam, and Falls Counties. 

 Greenbugs reported from Hays County with some spraying. In north-central areas 

 infestations remained fairly static. Beneficial insects increasing and keeping 

 greenbug populations static. Greenbug light to heavy in Navarro, Ellis, Kaufman, 

 Johnson, Collin, Hunt, and Fannin Counties. Light in Reeves, Pecos, Glasscock, 

 and Martin Counties. Heavy rains apparently reduced populations in Coyanosa area 

 of Pecos County. Remained light and scattered throughout South Plains. Some fields 

 in Lubbock and Bailey Counties have sufficient greenbugs to produce visible 

 honeydew. (Cole et al.). KANSAS - Counts per sorghum plant by county (number of 

 fields per county in parentheses) : Nemaha 4-20 (20) ; Brown 5-20 (2) ; Washington 



