Wednesday, 17 November 2004 - 11:12 AM
1023

Biology and management of linden borer, Saperda vestita Say (Coleoptera: Cerambycidae), in the urban landscape

Tina A. Johnson, tjohnson@entomology.wisc.edu and R. Chris Williamson, rcwillie@entomology.wisc.edu. University of Wisconsin- Madison, Entomology, 1630 Linden Drive, 246 Russell Labs, Madison, WI

The linden borer, Saperda vestita (Say), is a native species common throughout northeastern North America. The biology and management of this important pest were investigated in several, two-year field studies. The first study attempted to determine effectiveness of several systemic insecticide treatments including imidacloprid, thiamethoxam, and disulfoton in reducing infestations of linden borer larvae on several cultivars and species of Tilia. The number and location of linden borer adult exit holes were recorded prior to and after field cages were positioned below the first lateral branches (ca. 4-5 m) to the ground. Subsequently thereafter, trees were examined for emerging adults weekly throughout the two growing seasons. Another field study was conducted to determine the effects of chipping as a viable means of destroying linden borer infested wood. Six infested, dying T. cordata cv. 'Greenspire' trees were acquired from various locations in Wisconsin. Each infested trunk was quartered longitudinally, one quarter was chipped by a Bandit Model 250 chipper and another quarter was chipped by a Bandit Model 90 chipper. The remaining two quarters were cut into firewood length pieces, covered with aluminum screening, and either left outside or placed in a controlled environment to account for cage effects. Separate chip piles created by the respective chippers were arranged in a randomized complete block design and covered with aluminum screening. Survival was determined by counting the number of adults captured among treatments (i.e., trunk quarters).


Species 1: Coleoptera Cerambycidae Saperda vestita (linden borer)
Keywords: ornamental, linden borer

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