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
