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FALL ARMYWORM ( Spodoptera frugiperda ) - OKLAHOMA - Heavy in sorghum in Caddo, 

 Washita, and Jackson Counties and in corn in Canadian and Jackson Counties. 

 (Okla. Coop. Sur.). MARYLAND - Infestations in late-planted field corn expected 

 within 10 days in Frederick, Montgomery, and Carroll Counties. (U. Md . , Ent . 

 Dept . ) . 



CORN ROOTWORMS ( Diabrotica spp.) - WISCONSIN - D. longicornis (northern corn root- 

 worm) and D. virgifera (western corn rootworm) adults emerging; D. virgifera most 

 common. Diabrotica spp. adults 3+ per plant in Grant County field corn. Mating 

 begun. Lodging reported in Trempealeau, Walworth, Waushara, Rock, and Grant 

 Counties. Lodging due to wind in some central county fields with no rootworm 

 population. (Wis. Ins. Sur.). MINNESOTA - D. longicornis and D. undecimpunctata 

 undecimpunctata (southern corn rootworm) adults found in Dakota, Carver, Rock, 

 Nobles, and Redwood Counties. Most still in larval and pupal stages. Little 

 lodging observed. No wilting leaves seen even in severely damaged fields. (Minn. 

 Ins. Rpt . ) . SOUTH DAKOTA - Root damage extensive on untreated corn, particularly 

 in northern Moody and eastern Brookings Counties. Pupation and adult emergence 

 not yet general in these counties through July 19. (Jones, Kantack) . Adult 

 population may be at damaging levels in some fields next few weeks. (Jones). 

 KANSAS - Adults emerging in field corn statewide. Very few found in silking corn 

 in west-central and north-central districts but as high as 3 per plant (95 per- 

 cent D. virgifera ) in silking corn in Brown and Stanton Counties. (Bell). UTAH - 

 Damaging 50 acres of corn in Ogden and Kanesville area of Weber County. First 

 season of corn rootworm injury of any extent. (Roberts, Knowlton) . 



WESTERN CORN ROOTWORM ( Diabrotica virgifera ) - WYOMING - Larvae ranged 15-20 per 

 plant in untreated fields in Goshen County July 13. Damage in several fields 

 ranged none to severe; damage to roots ranged moderate to severe in untreated 

 fields. Population 10 percent adults, 75 percent larvae, 15 percent pupae. 

 (Burkhardt). COLORADO - Adults ranged 0-5 per plant in Greeley, Lucerne, and 

 Fort Lupton areas of Weld County. (Rothman) . Much damage to untreated corn in 

 Montezuma County. (Lancaster). OKLAHOMA - Adults averaged 5 per plant on untreated 

 corn in Texas County. (Okla. Coop. Sur.). NEBRASKA - Light, averaged less than 1 

 per plant in 7 Hall County and 6 Dawson County cornfields. (Roselle et al.). 

 NORTH DAKOTA - First adults of season observed on Cass County corn July 17; 

 averaged less than 1 per plant. (Brandvik) . 



NORTHERN CORN ROOTWORM ( Diabrotica longicornis ) - NEW HAMPSHIRE - Larvae 7-8 per 

 plant in field corn, noted 2 adults emerging, at Charlestown, Sullivan County. 

 (Fisher). NEW JERSEY - Larvae light to moderate, feeding on roots in experimental 

 corn plots near Bloomsbury, Hunterdon County. Many larvae full grown. (Ins.- 

 Dis. Newsltr.). PENNSYLVANIA - Averaged one larva per plant in Wyoming County 

 field that has been in continuous corn for 5-10 years. Most in last instar 

 July 14. No pupae found. Several small fields in Centre County in continuous 

 corn for 4 years averaged 6 per plant with 75 percent in pupal stage July 16. 

 (Gesell). 



CORN FLEA BEETLE (Chaetocnema pulicaria ) - MARYLAND - Infestations in field corn 

 ranged 40-100 percent in Frederick, Montgomery, Howard, Queen Annes , Kent, Talbot, 

 and Caroline Counties. Controls not needed at present. (U. Md . , Ent. Dept.). 



SORGHUM MIDGE ( Contarinia sorghicola ) - MISSISSIPPI - Damage light to grain sorghum 

 in Noxubee County, some fields treated. (Sartor). ARKANSAS - No damage occurred, 

 no treatments applied except for few isolated cases not needed. First midge of 

 season observed July 21 in breeding plots in Washington County. Remains much 

 below treatment level in southeast, east-central, and northeast areas. (Boyer) . 

 MISSOURI - Midges ranged 5-10 per head on sorghum in susceptible stages in south- 

 east area. (Houser) . 



BANKS GRASS MITE ( Oligonychus pratensis ) - TEXAS - Apparently increasing in older 

 grain sorghum but still light in most areas. Light to heavy in Castro, Deaf Smith, 

 Parmer, and Bailey Counties. Several beneficial insects, including a predacious 

 thrips, appear to be feeding on mites. (Clymer et al.). 



