Goldspotted oak borer, Agrilus auroguttatus
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Forest Insect & Disease Leaflet
The goldspotted oak borer (GSOB), Agrilus auroguttatus Schaeffer (Coleoptera: Buprestidae) (Figure 1), is a flatheaded phloem- and wood borer that infests and kills several species of oak (Fagaceae: Quercus) in California. One or more populations of GSOB were likely introduced via infested firewood into San Diego County, California from the native range in southeastern Arizona. Since its introduction to California, GSOB has expanded its range and has killed red oaks (Quercus Section Lobatae) nearly continuously across public and private lands.
Coleman, T.W.; Jones, M.I.; Smith, S.L.; Venette, R.C.; Flint, M.L.; Seybold, S.J. 2015. Goldspotted oak borer, Agrilus auroguttatus. USDA Forest Service, Forest Insect & Disease Leaflet No. 183, 16 p.