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BLACK SCALE ( Parlatoria pergandii ) infested 68 (norm 81) percent; economic in 41 

 (norm 63) percent. Statewide population continued in high range but below normal. 

 Little change expected. Infestations vary greatly in severity. Some heavy infesta- 

 tions will occur in all districts but not likely to become important this year. 

 Highest districts east, south, and central. An ARMORED SCALE ( Unaspis citri ) 

 infested 28 percent of groves; economic in 20 percent. Population greater than 

 in any prior July. Increase predicted. WHITEFLIES infested 75 percent of groves; 

 economic in 26 percent. Continued in high range and above normal. Decrease 

 expected. Highest district east. MEALYBUGS infested 57 percent of groves; 

 economic in 12 percent. Below normal and low. Decrease predicted. (W.A. Simanton 

 (Citrus Expt. Sta., Lake Alfred)). 



CALIFORNIA RED SCALE ( Aonidiella aurantii ) - ARIZONA - Additional reinf estation 

 found at Tucson, Pima County. TAriz. Coop. Sur.). 



COTTONYCUSHION SCALE ( Icerya purchasi ) - ARIZONA - New infestation found in lemon 

 grove at Yuma, Yuma County. (Ariz. Coop. Sur.). 



FOREST AND SHADE TREES 



CONIFER SAWFLIES ( Neodiprion spp.) - OKLAHOMA - Heavy on pine trees in numerous 

 spots in Pushmataha, Latimer, Le Flore, and Atoka Counties. Apparently second 

 generation of same species present in area in May and June. (Okla. Coop. Sur.). 

 FLORIDA - Second-generation larvae of N. exci tans caused average of 50 percent 

 defoliation of 8-year-old trees on 450 acres of loblolly pine near Steinhatchee 

 Springs, Taylor County. (Walker). Larvae cocooned by August 2; one or two 

 additional generations expected during 1971. (Wilkinson). CALIFORNIA - Thousands 

 of N. abietis (balsam fir sawfly) infesting white fir reproduction, pole, and 

 sapTing trees in Happy Valley, Pinman Peak, Little Long Valley, Walker Mine, 

 Bagley Pass, and Crocher Mountain areas of Plumas National Forest. Infestations 

 increasing in this and more northern areas. (Intorf, USFS) . 



PINE NEEDLE SCALE ( Phenacaspis pinif oliae ) - CALIFORNIA - Infesting pine trees 

 at 4,300— foot elevation in Springville, Tulare County; has been problem in many 

 scattered areas statewide. (Cal. Coop. Rpt.). WEST VIRGINIA - Damage light to 

 moderate on red pine and Scotch pine; 10 percent of 4-acre block damaged in 

 Morgan County. (W. Va . Ins. Sur.). 



AN APHID ( Eulachnus agilis ) - OHIO - Light numbers reported on Scotch pine in 

 northeast area. Anticipated August peak has not occurred in most plantations. 

 Necessity for chemical control of fall populations questionable. (Balderston, 

 Nielsen) . 



SPRUCE SPIDER MITE ( Oligonychus ununguis ) - WASHINGTON - Severely damaged Norway 

 spruce by August 3 at Colfax, Whitman County. (Entenmann, Retan) . 



ELM LEAF BEETLE ( Pyrrhalta luteola ) - OREGON - Larvae completely skeletonized 

 leaves of all untreated elms along 0.50-mile stretch along Lake Oswego, Clackamas 

 County. Survey August 4 revealed heavy numbers of pupae in grass clippings and 

 beneath fallen leaves around bases of infested trees. Numerous pupae seen in moss 

 growing on tree trunks. First-generation adults emerging, moving up into trees. 

 (Penrose, Humphrey). 



VARIABLE OAKLEAF CATERPILLAR ( Heterocampa manteo ) - NORTH DAKOTA - Eggs hatching 

 in Fort Totten area, Benson County. Up to 70 first and second-instar larvae on 

 basswood leaves; 50+ percent of leaves on some branches skeletonized. Defoliation 

 occurred in area in 1970. (Brandvik) . MARYLAND - Defoliated 10 acres of woodland 

 near Doncaster, Charles County. Infestations light to heavy over 8-square-mile 

 area between Doncaster and Riverside on State Highway 224 in Charles County. 

 (U. Md. , Ent. Dept.) . 



PACIFIC TENT CATERPILLAR ( Malacosoma constrictum ) - OREGON - Blacklight trap 

 catches at Macleay, Marion County, indicate adult flight activity near complete. 

 (Long, Westcott). 



