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SPECIAL INSECTS OF REGIONAL SIGNIFICANCE 



ARMYWORM (Pseudaletia unipuncta ) - COLORADO - Heavy on oats and grass near Fort 

 Collins, Larimer County. Damage heavy and controls applied. (Hantsbarger) . 

 NEBRASKA - Larvae less than 1 per 25 plants in 2 fields near Shelby, Polk County. 

 One field sprayed earlier showed about 10-15 percent loss of leaf tissue and 

 feeding on 70 percent of ear tips. Spray application timed too late. Most pupated 

 by August 17 (Keith, Kantor) . Larvae damaged millet, up to 5 per square foot in 

 Cheyenne, and Kimball Counties. Also damaged irrigated brome-wheatgrass pasture 

 in Banner County; larvae ranged 6-7 per square foot, with 35 acres of 50-acre 

 field destroyed. Parasites increased. (Hagan) . Ranged 0-6, averaged about 1 per 25 

 ears in 74 cornfields surveyed in Dawson County (Pruess) . GEORGIA - Larvae noted 

 in pasture in Oglethorpe County (Carter) ; in lawn in Fannin County during period 

 ending August 14. (Jordan, Coleman). 



CORN EARWORM (Heliothis zea ) - WASHINGTON - Heavy moth flight August 10, deter- 

 mined by light trap catches at Toppenish, Yakima County. (Landis) . UTAH - Larvae 

 moderate in sweet and field corn in Washington County (Huber) ; infestations 

 ranged 0-10 (averaged 5) percent in Cache County sweet corn. (Knowlton, Thornley) . 

 ARIZONA - Some terminal damage on sorghum in Yuma Valley, Yuma County. (Ariz. 

 Coop. Sur.). NEW MEXICO - This species and Trichoplusia ni (cabbage looper) 

 required controls on young lettuce in Mesilla Valley, Dona Ana County. H. zea 

 damage extensive but spotty on tomatoes. Some controls applied. Spotted""light to 

 medium on corn and sorghum in Curry and Roosevelt Counties. (N.M. Coop. Rpt.). 

 COLORADO - Damage appearing; infestations range 20-95 percent in Arkansas Valley 

 corn. (Schweissing) . NEBRASKA - Very light; averaged less than 1 per 100 plants 

 in 74 Dawson County fields (Pruess) . None observed in 2 fields at Shelby, Polk 

 County (Keith) . Generally light in all fields surveyed. Infested 10, 20, and 50 

 percent of ears in Harlan, Furnas, and York Counties, respectively. Negative in 

 Hamilton and Gosper Counties. (Helms). 



KANSAS - Heliothis zea larvae averaged about 1 per ear in one field of corn in 

 each of following counties: Morton, Meade, and Ford. Larvae in sorghum heads 

 usually averaged less than 0.1 per head in Woodson, Allen, Bourbon, Crawford, 

 and Labette Counties. None found on soybeans in these counties. (Bell). 

 OKLAHOMA - H. zea moderate to heavy on sorghum iii Alfalfa County and infested 25 

 percent of heads in Cotton County. Light in sorghum heads checked in Hughes and 

 Pittsburg Counties. Light to moderate on peanuts in Hughes County. Reported dying 

 on peanuts in Marshall County, apparently of virus disease. (Okla. Coop. Sur.), 

 TEXAS - Larvae attacking sorghum in some panhandle counties. In gulf coast area 

 larvae continued to damage grain sorghum. (Clymer, Cole). ALABAMA - Larvae (several 

 stages) heavy in grain sorghum fields in Houston, Henry, Covington, Geneva, 

 Coffee, and Crenshaw Counties. Larvae ranged 1-8 per head on several thousand 

 acres. This species and Celama sorghiella (sorghum webworm) occurring in mixed 

 populations and caused some growers problems in identification. 

 H. zea moth flights heavy. Small larvae light to heavy on peanut tips in many 

 southeast area fields. Some growers expect to add control efforts with other 

 treatments. (McQueen). 



GEORGIA - During period ending August 14, Heliothis zea larvae heavy in 25 acres 

 of corn in Catoosa County (Kendrick) ; fed in whorls in Clarke County (C.R. 

 Jordan) ; and light throughout peanut-growing area (Womack) . SOUTH CAROLINA - 

 Larvae 3-4 per head of sorghum in Horry County (Sparks) ; eggs on soybean tips 

 and up to 1 larval per 3 feet of row (Baskin) . KENTUCKY - Larval damaged corn 

 averaged 6 per 20 ear sample in Knott County. Larvae damage light to sorghum in 

 Todd County. (Barnett) . INDIANA - Fourteen cornfields in southwest district 

 averaged 1.1 larvae per 100 ears. (Meyer). MARYLAND - H. zea moths averaged 14 

 per night in blacklight trap at Hurlock, Dorchester County. Infestations in 

 late corn, beans, and soybeans expected to increase. (U. Md., Ent . Dept.). 

 DELAWARE - Adults averaged 6 per night in Sussex County blacklight traps. 

 (Burbutis, Lesiewicz) . NEW YORK - In Hudson Valley, mostly fourth instar larvae 

 7 per 100 tips of sweet corn noted August 13 at New Paltz in one planting. 



