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SPECIAL INSECTS OF REGIONAL SIGNIFICANCE 



ARMYWORM ( Pseudaletia unlpuncta ) - TEXAS - Larvae of this species and Spodoptera 

 frugiperda (fall armyworm) found in coastal pastures. S. irugiperda dominant. 

 (Green) . ElINNESOTA - Few P. unipuncta larvae feeding on corn in widely scattered 

 fields in southeast, south-central, and southwest districts. Noneconomic in 

 corn. (Minn. Pest Rpt.). MICHIGAN - No immediate danger apparent; blacklight 

 collections at all stations below normal for time of year. (Newman). 



ARMY CUTWORM ( Euxoa auxiliaris ) - WASHINGTON - Larvae of this species and 

 Peridroma saucia (varigated cutworm) causing extensive and increasing damage to 

 fruit and foliage of apple and pear in Yakima County. P. saucia infesting old 

 trees above head level and becoming heavy on young trees at Coniche. (Johnson). 



ASTER LEAFHOPPER ( Macrosteles f ascif rons ) - COLORADO - Averaged 16 per 10 sweeps 

 on untreated potatoes in Greeley area, Weld County. (Alldredge, Hantsbarger) . 

 WISCONSIN - Counts heavy in field of sweet corn in Outagamie County; ranged 

 30-40 per 10 sweeps in field of mint in southern Jefferson County. Counts in 

 carrots at this site variable; up to 2 per sweep. (Wis. Ins. Sur.). 



BEET LEAFHOPPER ( Circulif er tenellus) - CALIFORNIA - Curley top infection of 

 sugar beets ranged 20-80 percent. Infection 100 percent in one small field of 

 table beets, field abandoned. Leafhoppers increasing in thistle stands. In 

 Solvang area of Santa Barbara County curly top incident 6-10 percent. (Cal. 

 Coop. Rpt.). COLORADO - Remains light, ranged 0-4 per 10 square feet of row in 

 western area; incidence of curly top disease very light. (Hantsbarger, Bulla). 



CORN EARWORM ( Heliothis zea ) - DELAWARE - Light moth increase in blacklight traps 

 in Sussex County. (Lesiewicz) . MARYLAND - Moths averaged 10 per night at Hurlock, 

 Dorchester County; 5 per night at Snow Hill, Worcester County; and 4 per night 

 at Centreville, Queen Annes County. Larval damage to sweet corn in Queen Annes 

 County ranged 1-4 percent; up to 20 percent in most heavily infested fields on 

 Eastern Shore. Damage levels expected to increase rapidly until end of season. 

 No damage to snap beans, lima beans, and soybeans reported. (U. Md . , Ent. Dept.). 

 VIRGINIA - Ear infestation ranged 16-92 percent in southern Tidewater area. Based 

 on 15 samples, 45.9 percent of ears in region infested with second through fifth 

 instars. Survey included Dinwiddle, Sussex, Southampton, Nansemond , Isle of 

 Wight, Surry, and Prince George Counties. (Allen). WISCONSIN - Low numbers of 

 moths appearing in blacklight traps in extreme southern counties. (Wis. Ins. 

 Sur.). KANSAS - All instars noted, 100 percent of ears infested in field of late- 

 silking corn in Stafford County. Larvae (all sizes) averaged 2.3 per ear in one 

 field of late-silking corn in Harvey County. (Bell). ARKANSAS - Few larvae in 

 some fields in southeast areas. Check soybeans carefully. Larvae appearing in 

 sorghum heads in several areas of State, especially in areas where sugarlines 

 show heavy moth flights. Larvae 1-2 per row foot in Lonoke County. Heaviest 

 infestation ranged 5-10 per row foot in Yell County field. (Boyer) . OKLAHOMA - 

 Heavy in sorghum in Grady and Oklahoma Counties, moderate in peanuts in Bryan 

 County. (Okla. Coop. Sur.). TEXAS - Populations in grain sorghum have been heavy. 

 Moderate to heavy infestations reported in whorls and developing grain in Knox 

 County. (Boring, Clymer) . ARIZONA - Ranged 1-3 per ear of field corn in Cochise 

 County. (Ariz. Coop. Sur.). IDAHO - Tassel damage 5 percent in 5 cornfields at 

 Nampa , Canyon County, July 16. (Homan) . 



CORN LEAF APHID ( Rhopalosiphum maidis ) - UTAH - Heavy in field of spring barley 

 at Benson, Cache County. (Burtenshaw) . COLORADO - Generally light on corn in 

 northeastern areas. Predators active. (Pilcher, Hantsbarger). TEXAS - Decreasing 

 in most areas. Still heavy in scattered fields of young grain sorghum. (Clymer). 

 OKLAHOMA - Moderate on grain sorghum in Beaver, Cimarron, Osage, Grady, and 

 Tillman Counties. (Okla. Coop. Sur.). KANSAS - Populations generally decreasing 

 in sorghum in most areas. Infesting lower leaves of some irrigated sorghum in 

 northwest and west-central districts. (Bell). WISCONSIN - Infestations light to 

 heavy in different fields. Present in whorls and ear tips in heavily infested 

 fields. Counts very heavy on undersides of leaves, light on tassels and in silks 



