2009 SOD Science Symposium

 Tom W. coleman

USDA Forest Service, Forest Health Protection, Southern California Shared Service Area, San Bernardino, CA

NEW PEST: Gold spotted oak borer:

  • Affects coast live oak-black oak-canyon live oak-Englemann oak
  • Adults beetles are rarely seen
  • Takes several years to kill a tree
  • Feeds at the outer bark/cambium interface
  • Wet bleeding spots on tree trunks
  • D-shaped exit holes
  • Woodpeckers forage in spring
  • Up to 90% mortality
  • Over 17,000 oaks killed since 2002
  • Has entered CA via Mexico and Arizona
  • Likes red oak species
  • Does not affect white oak species

Certified Arborist WE-6717A

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