- 722 - 



Increase predicted for October. WHITEFLIES infested 88 percent of groves; economic 

 in 20 percent. Population of larval stage above normal and in high range. Decrease 

 expected. Highest districts west, central, and east. (W.A. Simanton, Citrus Expt . 

 Sta., Lake Alfred)) . 



CITRUS THRIPS (Scirtothrips citri ) - ARIZONA - Young trees treated in citrus 

 nursery at Yuma. Home ownei's noticed fruit scarring and leaf damage, especially 

 to new growth in Yuma County. (Ariz. Coop. Sur.). 



GRASSHOPPERS (Melanoplus spp.) - ARIZONA - Unusually heavy in citrus nursery 

 feeding on seedlings on Yuma Mesa, Yuma County. Controls needed. (Ariz. Coop. 

 Sur.) . 



SMALL FRUITS 



BROWN SOFT SCALE (Coccus hesperidum ) - CALIFORNIA - Adult infested wild grape- 

 vines at Napa, Napa County. Extensive grape vineyards in areao (Cal. Coop. Rpt.), 



GRAPE PHYLLOXERA ( Phylloxera vitifoliae ) - PENNSYLVANIA - Aerial leaf galls 

 caused by nymphs and adults seen on Sevyl Blanc grape, 20-25 galls per leaf in 

 Lancaster County September 27; root galls on Concord grapes in northeast, Erie 

 County September 29. (Adams) . 



FOREST AND SHADE TREES 



A CONIFER SAWFLY (Neodiprion taedae linearis ) - MISSOURI - Defoliation heaviest 

 in 15 years on 3-23 foot tall planted shortleaf pine along fringe of natural 

 range. Heavy defoliation expected in 1972. (Gass) . 



EUROPEAN PINE SAWFLY (Neodiprion sertifer ) - MISSOURI - Expect populations to 

 remain below normal or normal in 1972. (Gass) . 



WHITE PINE SAWFLY (Neodiprion pinetum ) - WEST VIRGINIA - Light larval damage to 

 plantings on reproduction white pine in Raleigh County. (W. Va. Ins. Sur.). 



BAGWORM (Thyridopteryx ephemeraef ormis ) - MISSOURI - Damage to evergreens expected 

 to increase in 1972. (Gass) . 



PALES WEEVIL (Hylobius pales ) - MISSOURI - Not serious in Christmas tree planta- 

 tions in 1971. Expect incidence to increase in 1972. (Gass). 



NATIVE ELM BARK BEETLE (Hylurgopinus rufipes) - NORTH DAKOTA - Elm trap logs 

 placed along Red River during May at 4 sites in Cass and Richland Counties this 

 period had up to 24 galleries per foot of log. (Brandvik) . 



ASIATIC OAK WEEVIL (Cyrtepistomus castaneus ) - MISSOURI - In 1971, more widespread 

 and caused more defoliation in previously uninfested areas. Expect little change 

 in 1972. (Gass) . 



FALL WEBWORM (Hyphantria cunea ) - MISSOURI - Populations heavy in southwest areas 

 in 1971. Expect heavy defoliation in same areas in 1972. (Gass). 



VARIABLE OAKLEAF CATERPILLAR (Heterocampa manteo ) - OKLAHOMA - Heavy oak tree 



defoliation in Preston area, Okmulgee County and Bryan County. (Okla. Coop. 



Sur.). ARKANSAS - Still abundant on oak trees in Jefferson and Lincoln Counties. 

 (Boyer) . 



FOREST TENT CATERPILLAR (Malacosoma disstria ) - MISSOURI - First reports in 75 

 years in southern areas. Expected to be more numerous in 1972. (Gass). 



EASTERN TENT CATERPILLAR (Malacosoma americanum) - MISSOURI - Egg mass counts 

 indicate heavy populations can be expected in 1972. (Gass). 



