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Diabrotica virgifera (western corn rootworm) 50 in second and 50 in third 

 instars in Pottawat tomie County. (Iowa Ins. Sur.). NEBRASKA - Last instars of 

 Diabrotica spp. feeding in corn roots at Mead, Saunders County. Pupation 

 underway and adult emergence expected next week. (Munson et al.). Reports of 

 lodged corn from Kearney and York Counties. (Keith). MISSOURI - First adult 

 D. virgifera of season observed in Barton County on June 24. (Keaster) . 



SORGHUM MIDGE (Contarinia sorghicola ) - TEXAS - Activity reported throughout 

 south-central area. Heavy in fields with uneven stands and with plants blooming 

 at different times. Light to heavy in scattered fields in Brazos and Robertson 

 Counties. Infestations noted in Collin, Hunt, and Fannin Counties. Infestations 

 light but expected to increase soon. (Cole et al.). ARKANSAS - Remains light in 

 blooming sorghum in Lafayette County. Numbers below economic level and no treat- 

 ment needed at this time. (Boyer) . 



CHINCH BUG (Blissus leucopterus leucopterus) - ARKANSAS - Destroyed 33 percent 

 of 10 acres of sorghum in Clay County. (Boyer). KANSAS - Heavy populations killing 

 young sorghum plants along field borders in Saline County, treating underway; 

 averaged 25 per plant in first 40-50 border rows in some fields. Heavy in sorghum 

 in Marion County. (Bell) . 



SOUTHERN GREEN STINK BUG (Nezara viridula ) - ALABAMA - Heavy in many corn fields 

 in Baldwin County. Yields in more heavily infested fields expected to be reduced 

 by about 20 bushels per acre. Some controls applied. Heavy numbers resulted from 

 heavy carryover of adults through mild winter and large acreage of wheat and 

 clovers for early season buildup. Presents potential threat to soybeans, okra, 

 peas, and pecans in southwest counties. (Turner). 



A LEAF BEETLE (Colaspis flavida ) - TENNESSEE - Moderate and damaged corn in 

 Madison County. Some stalks dying. Unusual in that field planted in corn in 1970 

 and damage usually occurs in fields planted in row crops following lespedeza. 

 (White) . 



SMALL GRAINS 



FALL ARMYWORM (Spodoptera frugiperda ) - TEXAS - Light to moderate in grain sorghum 

 in Pecos, Reeves"] Martin, and Glasscock Counties. (Neeb) . 



BANKS GRASS MITE (Oligonychus pratensis ) - TEXAS - Light on Johnson grass around 

 margins of grain sorghum, forage sorghum, and cornfields in Reeves and Pecos 

 Counties. Only detected on sorghum and corn. Numbers very low with only 10 

 percent of bottom 3 leaves with 10-15 eggs per leaf. Light on corn in El Paso 

 County. (Neeb) . 



ENGLISH GRAIN APHID (Macrosiphum avenae ) - WISCONSIN - Populations continue to be 

 very low in all areas sampled; very scarce in Marathon and Clark Counties. Highest 

 populations (about 10 per sweep) noted in Walworth and Kenosha Counties. (Wis. 

 Ins . Sur.) . 



GRASS THRIPS (Anaphothrips obscurus ) - OHIO - Damage light on about 12 acres of 

 oats in Wayne County on June 'Ay. About 1 percent of grain heads showing chlorosis. 

 (Lytle, Rings) . 



TURF, PASTURES, RANGELAND 



A SCARAB (Phyllophaga f imbripes ) - COLORADO - Caused considerable damage to 

 rangelands in Bent County. One area of 2,000 acres involved. (Hantsbarger, 

 Kotich) , 



SOUTHERN CHINCH BUG (Blissus insularis ) - TEXAS - Heavy on St. Augustine lawns 

 in Lee and Brazos Counties. (Spivey, Green). 



