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ORNAMENTALS 



BRONZE BIRCH BORER ( Agrilus anxius) - OREGON - Continues to cause severe problems 



at Pendleton, Umatilla County. Ornamental cut-leaf birch about 80-90 percent 



infested in Montee and Sherwood Heights area; homeowners extremely concerned. 

 (Westcott) . 



HOLLYHOCK WEEVIL (Apion longirostre ) - MISSOURI - Adults collected at 

 Versailles, Morgan County, June 29, 1971- by J.E. Francka. This is a new county 

 record. (Munson) . KANSAS - Adults on hollyhock in nurseries in Lyon, Osage, 

 Chase, and Marion Counties. Determinations by K.O. Bell and W. Iselin. These 

 are new county records. (Bell). NEVADA - Adults collected on hollyhock at 

 Austin, Lander County. This is a new county record. (Bechtel, Martinelli) . 



NANTUCKET PINE TIP MOTH ( Rhyacionia frustrana ) - KANSAS - Heavy in terminals of 

 ponderosa and Scotch pines in nursery in Lyon County, mostly late instars; 30 

 percent pupation. (Bell). 



SPIDER MITES - MARYLAND - Oligonychus ununguis (spruce spider mite) continues 

 to damage and kill spruce and hemlock in Harford, Baltimore, and Prince Georges 

 Counties. (U. Md . , Ent. Dept.). NEVADA - Unspecified species heavy on ornamental 

 conifers at Yerington, Lyon County. (Ba tchelder) . 



FOREST AND SHADE TREES 



SPRUCE BUDWORM ( Choristoneura fumiferana ) - PENNSYLVANIA - Severely damaging 

 hemlock in parts of Union, Centre, Lycoming, Luzerne, Schuylkill, Monroe, 

 Clearfield, Cameron, and Elk Counties. Worst damage in Driftwood and 

 Sinnemahoning area of Cameron County and on Union and Centre County line near 

 Woodward where 40 square miles or more of hemlock turned brown. Infested white 

 spruce plantation north of Johnsonburg, Elk County.. Pest now in pupal and adult 

 stages. First discovered on hemlock in Carbon County in 1969. (Nichols, June 24). 



PINE TUSSOCK MOTH ( Dasychira plagiata ) - MINNESOTA - Mostly in fifth and sixth 

 instars; pupation began about June 28. Caused moderate to heavy defoliation in 

 east-central areas. Approximately 1,000 acres of jack pine sprayed June 29-30. 

 (Minn. Pest Rpt.) . 



PINE COLASPIS ( Colaspis pini ) - FLORIDA - Adults found defoliating much 

 acreage of slash pine CPinus elliottii densa ) , in northern Glades and southern 

 Highlands Counties June 24. (Chellman , Wilkinson); adults still active in area 

 July 1. (Wilkinson). 



YELLOWHEADED SPRUCE SAWFLY (Pikonema alaskensis ) - NORTH DAKOTA - Larvae 

 damaged spruce near Walhalla, Pembina County. Up to 100 percent of needles 

 damaged on 10 percent of trees. Larvae ranged up to 7 per growing tip. Some 

 damage also reported in Rolette County. (Brandvik et. al.). 



CONIFER SAWFLIES ( Neodiprion spp.) - MICHIGAN - In N. pratti banksianae (jack 

 pine sawfly) outbreak area of Schoolcraft County, sapling and pole-size jack 

 pines in open stands completely stripped of old needles. Larvae in third and 

 fourth instars. (Johnson). Also very common in Manistee County. (Fiber). FLORIDA - 

 N. merkeli (slash pine sawfly) fourth and fifth instars completely defoliated 

 400 acres of 1,500-acre plantation of 6-year-old slash pine in Glades County by 

 June 24; fifth and sixth instars and some prepupae observed at same location 

 July 1, with about 50 percent of larvae apparently infected with a virus. Second 

 instars of N. lecontei (redheaded pine sawfly) moderate In 100 acres of 6 to 

 8-year-old northern slash pine ( Pinus e_. elliottii ) on plantation in Glades 

 County by June 24. Third and fourth instars taken at same location July 1; virus 

 introduced from Canada for possible control. Larvae moderate in 50 acres of 

 8-year-old longleaf pine (P. palustris ) on plantation in Taylor County June 30. 



