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DECIDUOUS FRUITS AND NUTS 



APPLE MAGGOT ( Rhagoletls pomonella ) - MINNESOTA - Flies taken in all locations 

 where traps placed. Two taken August 2 at New Ulm where none previously reported. 

 (Minn. Pest Rpt.). MICHIGAN - Emergence increasing; 11 flies recorded August 2 in 

 emergence cage at Paw Paw, Van Buren County, 27 at another location. Bait-trap 

 counts ranged 39-46 in Muskegon County blueberry plantation. Peak emergence 

 expected about mid-August. Threat of fruit damage could last through harvest. 

 (Thompson) . MAINE - Adult emergence decreasing; peak reached week of July 26. 

 (Gall) . 



CHERRY FRUIT FLY ( Rhagoletis cingulata ) - MICHIGAN - Emergence about ended for 

 season. Last fly trapped in area south of Grand Rapids July 26. Flies range 5-10 

 per week in baited traps from Hart and Shelby area northward. (Thompson). 



CODLING MOTH ( Laspeyresia pomonella ) - WASHINGTON - First second-brood entries in 

 apple August 3 at Grandview, Yakima County. (Johnson). 



PEAR PSYLLA ( Psylla pyricola ) - MICHIGAN - Inspection of leaf spurs on untreated 

 trees indicates new generation at Fennville, Allegan County. Counts per 10 spurs 

 August 4 showed 229 eggs, 206 nymphs, and 43 winged nymphs. Immediate application 

 of recommended chemicals should effectively manage population. (Thompson). 



WALNUT HUSK FLY ( Rhagoletis completa ) - CALIFORNIA - Adult emergence in lower 

 Sacramento Valley and upper San Joaquin Valley about double that of previous week; 

 some growers will treat. Dooryard trees usually treated first time between July 24 

 and August 8. Emergence normal this season. (Cal. Coop. Rpt.). OREGON - First 

 adults (3) in Multnomah County taken in Frick traps in North Portland area August 

 4. (Anderson). First adults (3) in Douglas County, trapped in Franquette walnut 

 orchards at Riddle July 28; total of 108 trapped in area by August 2. Total of 15 

 adults taken in traps at Dillard August 2. (Passon) . First adults from Jackson 

 County reported at Medford August 3. (Berry). 



WALNUT CATERPILLAR ( Da tana integerrima ) - TENNESSEE - Defoliated 50 percent of 

 pecan trees in localized area of Dyer County. (Stafford). Defoliating walnut 

 trees in many parts of upper eastern area. (Gordon). NORTH CAROLINA - Larvae 

 reported damaging pecan, hickory, and walnut. Some small trees completely 

 defoliated. Observations indicate more damage than in 1970. (Green). 



PECAN NUT CASEBEARER ( Acrobasis caryae ) - OKLAHOMA - Second-generation larvae 

 caused 10 percent damage in Marshall County. (Okla. Coop. Sur.). 



CITRUS 



Insect Situation in Florida - End of July - CITRUS RUST MITE ( Phyllocoptru ta 

 oleivoral infested 81 (norm 63) percent of groves; economic in 71 (norm 44) 

 percent. Population above normal and at very high level on leaves and fruit. 

 Decrease expected after mid-August, will continue in high range. All districts 

 high. CITRUS RED MITE ( Panonychus citri ) infested 66 (norm 63) percent of groves; 

 economic in 34 (norm 36*5 percent . Population near normal and at moderate level. 

 Further decrease to low level will occur in August. Highest districts south, west, 

 and central. TEXAS CITRUS MITE ( Eu tetranychus banksi ) infested 72 (norm 69) 

 percent of groves; economic in 45 (norm 43) percent. Population near normal but 

 still in high range. Will decrease rapidly to very low level in August. Highest 

 districts central, south, and east. GLOVER SCALE ( Lepidosaphes gloverii ) infested 

 72 (norm 76) percent of groves; economic in 14 (norm 26) percent . Below normal 

 and dropped to moderate level. Little change expected. Highest districts south 

 and west. PURPLE SCALE (L. beckii ) infested 65 (norm 68) percent of groves; 

 economic in 5 (norm 6) percent. CHAFF SCALE ( Parla toria pergandii ) infested 41 

 (norm 57) percent of groves; economic in 2 (norm 6) percent . YELLOW SCALE 

 ( Aonidiella ci trina ) infested 35 (norm 63) percent of groves; economic in none 

 (norm 8) pe^rceni. Populations of these scales below normal and in low range. 

 Further decrease predicted. No severe infestations expected in any district. 



